By J.G. FRAZER. Fellow of Trinity College, Cambridge.
On a bright day in late autumn a good many years ago I had ascended the
hill of Panopeus in Phocis to examine the ancient Greek fortifications
which crest its brow. It was the first of November, but the weather was
very hot; and when my work among the ruins was done, I was glad to
rest under the shade of a clump of fine holly-oaks, to inhale the sweet
refreshing perfume of the wild thyme which scented all the air, and
to enjoy the distant prospects, rich in natural beauty, rich too in
memories of the legendary and historic past. To the south the finely-cut
peak of Helicon peered over the low intervening hills. In the west
loomed the mighty mass of Parnassus, its middle slopes darkened by
pine-woods like shadows of clouds brooding on the mountain-side; while
at its skirts nestled the ivy-mantled walls of Daulis overhanging the
deep glen, whose romantic beauty accords so well with the loves and
sorrows of Procne and Philomela, which Greek tradition associated
with the spot. Northwards, across the broad plain to which the hill
of Panopeus descends, steep and bare, the eye rested on the gap in the
hills through which the Cephissus winds his tortuous way to flow under
grey willows, at the foot of barren stony hills, till his turbid waters
lose themselves, no longer in the vast reedy swamps of the now vanished
Copaic Lake, but in the darkness of a cavern in the limestone rock.
Eastward, clinging to the slopes of the bleak range of which the hill
of Panopeus forms part, were the ruins of Chaeronea, the birthplace of
Plutarch; and out there in the plain was fought the disastrous battle
which laid Greece at the feet of Macedonia. There, too, in a later age
East and West met in deadly conflict, when the Roman armies under Sulla
defeated the Asiatic hosts of Mithridates. Such was the landscape spread
out before me on one of those farewell autumn days of almost pathetic
splendour, when the departing summer seems to linger fondly, as if loth
to resign to winter the enchanted mountains of Greece. Next day the
scene had changed: summer was gone. A grey November mist hung low on the
hills which only yesterday had shone resplendent in the sun, and under
its melancholy curtain the dead flat of the Chaeronean plain, a wide
treeless expanse shut in by desolate slopes, wore an aspect of chilly
sadness befitting the battlefield where a nation's freedom was lost.
But crowded as the prospect from Panopeus is with memories of the past,
the place itself, now so still and deserted, was once the scene of an
event even more ancient and memorable, if Greek story-tellers can be
trusted. For here, they say, the sage Prometheus created our first
parents by fashioning them, like a potter, out of clay. (Pausanias X.
4.4. Compare Apollodorus, "Bibliotheca", I. 7. 1; Ovid, "Metamorph."
I. 82 sq.; Juvenal, "Sat". XIV. 35. According to another version of
the tale, this creation of mankind took place not at Panopeus, but
at Iconium in Lycaonia. After the original race of mankind had been
destroyed in the great flood of Deucalion, the Greek Noah, Zeus
commanded Prometheus and Athena to create men afresh by moulding images
out of clay, breathing the winds into them, and making them live. See
"Etymologicum Magnum", s.v. "'Ikonion", pages 470 sq. It is said that
Prometheus fashioned the animals as well as men, giving to each kind of
beast its proper nature. See Philemon, quoted by Stobaeus, "Florilegium"
II. 27. The creation of man by Prometheus is figured on ancient works of
art. See J. Toutain, "Etudes de Mythologie et d'Histoire des Religions
Antiques" (Paris, 1909), page 190. According to Hesiod ("Works and
Days", 60 sqq.) it was Hephaestus who at the bidding of Zeus moulded the
first woman out of moist earth.) The very spot where he did so can still
be seen. It is a forlorn little glen or rather hollow behind the hill
of Panopeus, below the ruined but still stately walls and towers which
crown the grey rocks of the summit. The glen, when I visited it that hot
day after the long drought of summer, was quite dry; no water trickled
down its bushy sides, but in the bottom I found a reddish crumbling
earth, a relic perhaps of the clay out of which the potter Prometheus
moulded the Greek Adam and Eve. In a volume dedicated to the honour of
one who has done more than any other in modern times to shape the ideas
of mankind as to their origin it may not be out of place to recall this
crude Greek notion of the creation of the human race, and to compare or
contrast it with other rudimentary speculations of primitive peoples
on the same subject, if only for the sake of marking the interval which
divides the childhood from the maturity of science.
The simple notion that the first man and woman were modelled out of clay
by a god or other superhuman being is found in the traditions of many
peoples. This is the Hebrew belief recorded in Genesis: "The Lord God
formed man of the dust of the ground, and breathed into his nostrils the
breath of life; and man became a living soul." (Genesis ii.7.) To the
Hebrews this derivation of our species suggested itself all the more
naturally because in their language the word for "ground" (adamah) is
in form the feminine of the word for man (adam). (S.R. Driver and
W.H.Bennett, in their commentaries on Genesis ii. 7.) From various
allusions in Babylonian literature it would seem that the Babylonians
also conceived man to have been moulded out of clay. (H. Zimmern, in E.
Schrader's "Die Keilinschriften und das Alte Testament" 3 (Berlin, 1902),
page 506.) According to Berosus, the Babylonian priest whose account of
creation has been preserved in a Greek version, the god Bel cut off his
own head, and the other gods caught the flowing blood, mixed it with
earth, and fashioned men out of the bloody paste; and that, they said,
is why men are so wise, because their mortal clay is tempered with
divine blood. (Eusebius, "Chronicon", ed. A. Schoene, Vol. I. (Berlin,
1875), col. 16.) In Egyptian mythology Khnoumou, the Father of the gods,
is said to have moulded men out of clay. (G. Maspero, "Histoire Ancienne
des Peuples de l'Orient Classique", I. (Paris, 1895), page 128.) We
cannot doubt that such crude conceptions of the origin of our race were
handed down to the civilised peoples of antiquity by their savage or
barbarous forefathers. Certainly stories of the same sort are known to
be current among savages and barbarians.
Thus the Australian blacks in the neighbourhood of Melbourne said that
Pund-jel, the creator, cut three large sheets of bark with his big
knife. On one of these he placed some clay and worked it up with his
knife into a proper consistence. He then laid a portion of the clay on
one of the other pieces of bark and shaped it into a human form; first
he made the feet, then the legs, then the trunk, the arms, and the head.
Thus he made a clay man on each of the two pieces of bark; and being
well pleased with them he danced round them for joy. Next he took
stringy bark from the Eucalyptus tree, made hair of it, and stuck it
on the heads of his clay men. Then he looked at them again, was pleased
with his work, and again danced round them for joy. He then lay down
on them, blew his breath hard into their mouths, their noses, and their
navels; and presently they stirred, spoke, and rose up as full-grown
men. (R. Brough Smyth, "The Aborigines of Victoria" (Melbourne, 1878),
I. 424. This and many of the following legends of creation have been
already cited by me in a note on Pausanias X. 4. 4 ("Pausanias's
Description of Greece, translated with a Commentary" (London, 1898),
Vol V. pages 220 sq.).) The Maoris of New Zealand say that Tiki made man
after his own image. He took red clay, kneaded it, like the Babylonian
Bel, with his own blood, fashioned it in human form, and gave the image
breath. As he had made man in his own likeness he called him Tiki-ahua
or Tiki's likeness. (R. Taylor "Te Ika A Maui, or New Zealand and
its Inhabitants", Second Edition (London, 1870), page 117. Compare E.
Shortland, "Maori Religion and Mythology" (London, 1882), pages 21 sq.)
A very generally received tradition in Tahiti was that the first human
pair was made by Taaroa, the chief god. They say that after he had
formed the world he created man out of red earth, which was also the
food of mankind until bread-fruit was produced. Further, some say that
one day Taaroa called for the man by name, and when he came he made him
fall asleep. As he slept, the creator took out one of his bones (ivi)
and made a woman of it, whom he gave to the man to be his wife, and the
pair became the progenitors of mankind. This narrative was taken down
from the lips of the natives in the early years of the mission to
Tahiti. The missionary who records it observes: "This always appeared
to me a mere recital of the Mosaic account of creation, which they
had heard from some European, and I never placed any reliance on it,
although they have repeatedly told me it was a tradition among them
before any foreigner arrived. Some have also stated that the woman's
name was Ivi, which would be by them pronounced as if written "Eve".
"Ivi" is an aboriginal word, and not only signifies a bone, but also a
widow, and a victim slain in war. Notwithstanding the assertion of
the natives, I am disposed to think that "Ivi", or Eve, is the only
aboriginal part of the story, as far as it respects the mother of the
human race. (W. Ellis, "Polynesian Researches", Second Edition (London,
1832), I. 110 sq. "Ivi" or "iwi" is the regular word for "bone" in the
various Polynesian languages. See E. Tregear, "The Maori-Polynesian
Comparative Dictionary" (Wellington, New Zealand, 1891), page 109.)
However, the same tradition has been recorded in other parts of
Polynesia besides Tahiti. Thus the natives of Fakaofo or Bowditch Island
say that the first man was produced out of a stone. After a time he
bethought him of making a woman. So he gathered earth and moulded the
figure of a woman out of it, and having done so he took a rib out of his
left side and thrust it into the earthen figure, which thereupon started
up a live woman. He called her Ivi (Eevee) or "rib" and took her to
wife, and the whole human race sprang from this pair. (G. Turner,
"Samoa" (London, 1884), pages 267 sq.) The Maoris also are reported to
believe that the first woman was made out of the first man's ribs. (J.L.
Nicholas, "Narrative of a Voyage to New Zealand" (London, 1817), I.
59, who writes "and to add still more to this strange coincidence, the
general term for bone is 'Hevee'.") This wide diffusion of the story
in Polynesia raises a doubt whether it is merely, as Ellis thought, a
repetition of the Biblical narrative learned from Europeans. In Nui, or
Netherland Island, it was the god Aulialia who made earthen models of
a man and woman, raised them up, and made them live. He called the man
Tepapa and the woman Tetata. (G. Turner, "Samoa", pages 300 sq.)
In the Pelew Islands they say that a brother and sister made men out of
clay kneaded with the blood of various animals, and that the characters
of these first men and of their descendants were determined by the
characters of the animals whose blood had been kneaded with the
primordial clay; for instance, men who have rat's blood in them are
thieves, men who have serpent's blood in them are sneaks, and men who
have cock's blood in them are brave. (J. Kubary, "Die Religion der
Pelauer", in A. Bastian's "Allerlei aus Volks- und Menschenkunde"
(Berlin, 1888), I. 3, 56.) According to a Melanesian legend, told in
Mota, one of the Banks Islands, the hero Qat moulded men of clay, the
red clay from the marshy river-side at Vanua Lava. At first he made men
and pigs just alike, but his brothers remonstrated with him, so he
beat down the pigs to go on all fours and made men walk upright. Qat
fashioned the first woman out of supple twigs, and when she smiled
he knew she was a living woman. (R.H. Codrington, "The Melanesians"
(Oxford, 1891), page 158.) A somewhat different version of the
Melanesian story is told at Lakona, in Santa Maria. There they say that
Qat and another spirit ("vui") called Marawa both made men. Qat made
them out of the wood of dracaena-trees. Six days he worked at them,
carving their limbs and fitting them together. Then he allowed them six
days to come to life. Three days he hid them away, and three days more
he worked to make them live. He set them up and danced to them and beat
his drum, and little by little they stirred, till at last they could
stand all by themselves. Then Qat divided them into pairs and called
each pair husband and wife. Marawa also made men out of a tree, but it
was a different tree, the tavisoviso. He likewise worked at them six
days, beat his drum, and made them live, just as Qat did. But when he
saw them move, he dug a pit and buried them in it for six days, and
then, when he scraped away the earth to see what they were doing, he
found them all rotten and stinking. That was the origin of death. (R.H.
Codrington op. cit., pages 157 sq.)
The inhabitants of Noo-Hoo-roa, in the Kei Islands say that their
ancestors were fashioned out of clay by the supreme god, Dooadlera,
who breathed life into the clay figures. (C.M. Pleyte, "Ethnographische
Beschrijving der Kei-Eilanden", "Tijdschrift van het Nederlandsch
Aardrijkskundig Genootschap", Tweede Serie X. (1893), page 564.) The
aborigines of Minahassa, in the north of Celebes, say that two beings
called Wailan Wangko and Wangi were alone on an island, on which grew
a cocoa-nut tree. Said Wailan Wangko to Wangi, "Remain on earth while
I climb up the tree." Said Wangi to Wailan Wangko, "Good." But then
a thought occurred to Wangi and he climbed up the tree to ask Wailan
Wangko why he, Wangi, should remain down there all alone. Said Wailan
Wangko to Wangi, "Return and take earth and make two images, a man and a
woman." Wangi did so, and both images were men who could move but could
not speak. So Wangi climbed up the tree to ask Wailan Wangko, "How now?
The two images are made, but they cannot speak." Said Wailan Wangko to
Wangi, "Take this ginger and go and blow it on the skulls and the ears
of these two images, that they may be able to speak; call the man Adam
and the woman Ewa." (N. Graafland "De Minahassa" (Rotterdam, 1869), I.
pages 96 sq.) In this narrative the names of the man and woman betray
European influence, but the rest of the story may be aboriginal. The
Dyaks of Sakarran in British Borneo say that the first man was made by
two large birds. At first they tried to make men out of trees, but
in vain. Then they hewed them out of rocks, but the figures could not
speak. Then they moulded a man out of damp earth and infused into his
veins the red gum of the kumpang-tree. After that they called to him and
he answered; they cut him and blood flowed from his wounds. (Horsburgh,
quoted by H. Ling Roth, "The Natives of Sarawak and of British North
Borneo" (London, 1896), I. pages 299 sq. Compare The Lord Bishop
of Labuan, "On the Wild Tribes of the North-West Coast of Borneo,"
"Transactions of the Ethnological Society of London", New Series, II.
(1863), page 27.)
The Kumis of South-Eastern India related to Captain Lewin, the Deputy
Commissioner of Hill Tracts, the following tradition of the creation of
man. "God made the world and the trees and the creeping things first,
and after that he set to work to make one man and one woman, forming
their bodies of clay; but each night, on the completion of his work,
there came a great snake, which, while God was sleeping, devoured the
two images. This happened twice or thrice, and God was at his wit's end,
for he had to work all day, and could not finish the pair in less than
twelve hours; besides, if he did not sleep, he would be no good," said
Captain Lewin's informant. "If he were not obliged to sleep, there would
be no death, nor would mankind be afflicted with illness. It is when
he rests that the snake carries us off to this day. Well, he was at his
wit's end, so at last he got up early one morning and first made a dog
and put life into it, and that night, when he had finished the images,
he set the dog to watch them, and when the snake came, the dog barked
and frightened it away. This is the reason at this day that when a
man is dying the dogs begin to howl; but I suppose God sleeps heavily
now-a-days, or the snake is bolder, for men die all the same." (Capt.
T.H. Lewin, "Wild Races of South-Eastern India" (London, 1870),
pages 224-26.) The Khasis of Assam tell a similar tale. (A. Bastian,
"Volkerstamme am Brahmaputra und verwandtschaftliche Nachbarn" (Berlin,
1883), page 8; Major P.R.T. Gurdon, "The Khasis" (London, 1907), page
106.)
The Ewe-speaking tribes of Togo-land, in West Africa, think that God
still makes men out of clay. When a little of the water with which he
moistens the clay remains over, he pours it on the ground and out of
that he makes the bad and disobedient people. When he wishes to make a
good man he makes him out of good clay; but when he wishes to make a
bad man, he employs only bad clay for the purpose. In the beginning
God fashioned a man and set him on the earth; after that he fashioned
a woman. The two looked at each other and began to laugh, whereupon
God sent them into the world. (J. Spieth, "Die Ewe-Stamme, Material zur
Kunde des Ewe-Volkes in Deutsch-Togo" (Berlin, 1906), pages 828, 840.)
The Innuit or Esquimaux of Point Barrow, in Alaska, tell of a time when
there was no man in the land, till a spirit named "a se lu", who resided
at Point Barrow, made a clay man, set him up on the shore to dry,
breathed into him and gave him life. ("Report of the International
Expedition to Point Barrow" (Washington, 1885), page 47.) Other
Esquimaux of Alaska relate how the Raven made the first woman out of
clay to be a companion to the first man; he fastened water-grass to the
back of the head to be hair, flapped his wings over the clay figure,
and it arose, a beautiful young woman. (E.W. Nelson, "The Eskimo about
Bering Strait", "Eighteenth Annual Report of the Bureau of American
Ethnology", Part I. (Washington, 1899), page 454.) The Acagchemem
Indians of California said that a powerful being called Chinigchinich
created man out of clay which he found on the banks of a lake; male and
female created he them, and the Indians of the present day are their
descendants. (Friar Geronimo Boscana, "Chinigchinich", appended to (A.
Robinson's) "Life in California" (New York, 1846), page 247.) A priest
of the Natchez Indians in Louisiana told Du Pratz "that God had kneaded
some clay, such as that which potters use and had made it into a little
man; and that after examining it, and finding it well formed, he blew up
his work, and forthwith that little man had life, grew, acted, walked,
and found himself a man perfectly well shaped." As to the mode in which
the first woman was created, the priest had no information, but thought
she was probably made in the same way as the first man; so Du Pratz
corrected his imperfect notions by reference to Scripture. (M. Le Page
Du Pratz, "The History of Louisiana" (London, 1774), page 330.) The
Michoacans of Mexico said that the great god Tucapacha first made man
and woman out of clay, but that when the couple went to bathe in a river
they absorbed so much water that the clay of which they were composed
all fell to pieces. Then the creator went to work again and moulded them
afresh out of ashes, and after that he essayed a third time and made
them of metal. This last attempt succeeded. The metal man and woman
bathed in the river without falling to pieces, and by their union they
became the progenitors of mankind. (A. de Herrera, "General History of
the vast Continent and Islands of America", translated into English by
Capt. J. Stevens (London, 1725, 1726), III. 254; Brasseur de Bourbourg,
"Histoire des Nations Civilisees du Mexique et de l'Amerique-Centrale"
(Paris, 1857--1859), III. 80 sq; compare id. I. 54 sq.)
According to a legend of the Peruvian Indians, which was told to a
Spanish priest in Cuzco about half a century after the conquest, it was
in Tiahuanaco that man was first created, or at least was created afresh
after the deluge. "There (in Tiahuanaco)," so runs the legend, "the
Creator began to raise up the people and nations that are in that
region, making one of each nation of clay, and painting the dresses that
each one was to wear; those that were to wear their hair, with hair, and
those that were to be shorn, with hair cut. And to each nation was given
the language, that was to be spoken, and the songs to be sung, and the
seeds and food that they were to sow. When the Creator had finished
painting and making the said nations and figures of clay, he gave life
and soul to each one, as well men as women, and ordered that they should
pass under the earth. Thence each nation came up in the places to which
he ordered them to go." (E.J. Payne, "History of the New World called
America", I. (Oxford, 1892), page 462.)
These examples suffice to prove that the theory of the creation of man
out of dust or clay has been current among savages in many parts of
the world. But it is by no means the only explanation which the savage
philosopher has given of the beginnings of human life on earth. Struck
by the resemblances which may be traced between himself and the beasts,
he has often supposed, like Darwin himself, that mankind has been
developed out of lower forms of animal life. For the simple savage has
none of that high notion of the transcendant dignity of man which makes
so many superior persons shrink with horror from the suggestion that
they are distant cousins of the brutes. He on the contrary is not too
proud to own his humble relations; indeed his difficulty often is
to perceive the distinction between him and them. Questioned by a
missionary, a Bushman of more than average intelligence "could not state
any difference between a man and a brute--he did not know but a buffalo
might shoot with bows and arrows as well as man, if it had them."
(Reverend John Campbell, "Travels in South Africa" (London, 1822, II.
page 34.) When the Russians first landed on one of the Alaskan islands,
the natives took them for cuttle-fish "on account of the buttons on
their clothes." (I. Petroff, "Report on the Population, Industries, and
Resources of Alaska", page 145.) The Giliaks of the Amoor think that the
outward form and size of an animal are only apparent; in substance every
beast is a real man, just like a Giliak himself, only endowed with an
intelligence and strength, which often surpass those of mere ordinary
human beings. (L. Sternberg, "Die Religion der Giljaken", "Archiv fur
Religionswissenschaft", VIII. (1905), page 248.) The Borororos, an
Indian tribe of Brazil, will have it that they are parrots of a gorgeous
red plumage which live in their native forests. Accordingly they treat
the birds as their fellow-tribesmen, keeping them in captivity, refusing
to eat their flesh, and mourning for them when they die. (K. von den
Steinen, "Unter den Naturvolkern Zentral-Brasiliens" (Berlin, 1894),
pages 352 sq., 512.))
This sense of the close relationship of man to the lower creation is the
essence of totemism, that curious system of superstition which unites
by a mystic bond a group of human kinsfolk to a species of animals or
plants. Where that system exists in full force, the members of a totem
clan identify themselves with their totem animals in a way and to an
extent which we find it hard even to imagine. For example, men of the
Cassowary clan in Mabuiag think that cassowaries are men or nearly so.
"Cassowary, he all same as relation, he belong same family," is the
account they give of their relationship with the long-legged bird.
Conversely they hold that they themselves are cassowaries for all
practical purposes. They pride themselves on having long thin legs like
a cassowary. This reflection affords them peculiar satisfaction when
they go out to fight, or to run away, as the case may be; for at such
times a Cassowary man will say to himself, "My leg is long and thin, I
can run and not feel tired; my legs will go quickly and the grass will
not entangle them." Members of the Cassowary clan are reputed to be
pugnacious, because the cassowary is a bird of very uncertain temper and
can kick with extreme violence. (A.C. Haddon, "The Ethnography of
the Western Tribe of Torres Straits", "Journal of the Anthropological
Institute", XIX. (1890), page 393; "Reports of the Cambridge
Anthropological Expedition to Torres Straits", V. (Cambridge, 1904),
pages 166, 184.) So among the Ojibways men of the Bear clan are reputed
to be surly and pugnacious like bears, and men of the Crane clan to
have clear ringing voices like cranes. (W.W. Warren, "History of the
Ojibways", "Collections of the Minnesota Historical Society", V. (Saint
Paul, Minn. 1885), pages 47, 49.) Hence the savage will often speak of
his totem animal as his father or his brother, and will neither kill it
himself nor allow others to do so, if he can help it. For example, if
somebody were to kill a bird in the presence of a native Australian who
had the bird for his totem, the black might say, "What for you kill
that fellow? that my father!" or "That brother belonging to me you
have killed; why did you do it?" (E. Palmer, "Notes on some Australian
Tribes", "Journal of the Anthropological Institute", XIII. (1884), page
300.) Bechuanas of the Porcupine clan are greatly afflicted if anybody
hurts or kills a porcupine in their presence. They say, "They have
killed our brother, our master, one of ourselves, him whom we sing of";
and so saying they piously gather the quills of their murdered brother,
spit on them, and rub their eyebrows with them. They think they would
die if they touched its flesh. In like manner Bechuanas of the Crocodile
clan call the crocodile one of themselves, their master, their
brother; and they mark the ears of their cattle with a long slit like a
crocodile's mouth by way of a family crest. Similarly Bechuanas of the
Lion clan would not, like the members of other clans, partake of lion's
flesh; for how, say they, could they eat their grandfather? If they are
forced in self-defence to kill a lion, they do so with great regret and
rub their eyes carefully with its skin, fearing to lose their sight if
they neglected this precaution. (T. Arbousset et F. Daumas, "Relation
d'un Voyage d'Exploration au Nord-Est de la Colonie du Cap de
Bonne-Esperance" (Paris, 1842), pages 349 sq., 422-24.) A Mandingo
porter has been known to offer the whole of his month's pay to save
the life of a python, because the python was his totem and he therefore
regarded the reptile as his relation; he thought that if he allowed
the creature to be killed, the whole of his own family would perish,
probably through the vengeance to be taken by the reptile kinsfolk of
the murdered serpent. (M. le Docteur Tautain, "Notes sur les Croyances
et Pratiques Religieuses des Banmanas", "Revue d'Ethnographie",
III. (1885), pages 396 sq.; A. Rancon, "Dans la Haute-Gambie, Voyage
d'Exploration Scientifique" (Paris, 1894), page 445.)
Sometimes, indeed, the savage goes further and identifies the revered
animal not merely with a kinsman but with himself; he imagines that one
of his own more or less numerous souls, or at all events that a vital
part of himself, is in the beast, so that if it is killed he must die.
Thus, the Balong tribe of the Cameroons, in West Africa, think that
every man has several souls, of which one is lodged in an elephant, a
wild boar, a leopard, or what not. When any one comes home, feels ill,
and says, "I shall soon die," and is as good as his word, his friends
are of opinion that one of his souls has been shot by a hunter in a wild
boar or a leopard, for example, and that that is the real cause of his
death. (J. Keller, "Ueber das Land und Volk der Balong", "Deutsches
Kolonialblatt", 1 October, 1895, page 484.) A Catholic missionary,
sleeping in the hut of a chief of the Fan negroes, awoke in the middle
of the night to see a huge black serpent of the most dangerous sort
in the act of darting at him. He was about to shoot it when the chief
stopped him, saying, "In killing that serpent, it is me that you would
have killed. Fear nothing, the serpent is my elangela." (Father Trilles,
"Chez les Fang, leurs Moeurs, leur Langue, leur Religion", "Les Missions
Catholiques", XXX. (1898), page 322.) At Calabar there used to be some
years ago a huge old crocodile which was well known to contain the
spirit of a chief who resided in the flesh at Duke Town. Sporting
Vice-Consuls, with a reckless disregard of human life, from time to time
made determined attempts to injure the animal, and once a peculiarly
active officer succeeded in hitting it. The chief was immediately laid
up with a wound in his leg. He SAID that a dog had bitten him, but
few people perhaps were deceived by so flimsy a pretext. (Miss Mary H.
Kingsley, "Travels in West Africa" (London, 1897), pages 538 sq. As to
the external or bush souls of human beings, which in this part of Africa
are supposed to be lodged in the bodies of animals, see Miss Mary H.
Kingsley op. cit. pages 459-461; R. Henshaw, "Notes on the Efik belief
in 'bush soul'", "Man", VI.(1906), pages 121 sq.; J. Parkinson,
"Notes on the Asaba people (Ibos) of the Niger", "Journal of the
Anthropological Institute", XXXVI. (1906), pages 314 sq.) Once when Mr
Partridge's canoe-men were about to catch fish near an Assiga town in
Southern Nigeria, the natives of the town objected, saying, "Our
souls live in those fish, and if you kill them we shall die." (Charles
Partridge, "Cross River Natives" (London, 1905), pages 225 sq.) On
another occasion, in the same region, an Englishman shot a hippopotamus
near a native village. The same night a woman died in the village,
and her friends demanded and obtained from the marksman five pounds as
compensation for the murder of the woman, whose soul or second self had
been in that hippopotamus. (C.H. Robinson, "Hausaland" (London, 1896),
pages 36 sq.) Similarly at Ndolo, in the Congo region, we hear of a
chief whose life was bound up with a hippopotamus, but he prudently
suffered no one to fire at the animal. ("Notes Analytiques sur les
Collections Ethnographiques du Musee du Congo", I. (Brussels, 1902-06),
page 150.)
Amongst people who thus fail to perceive any sharp line of distinction
between beasts and men it is not surprising to meet with the belief that
human beings are directly descended from animals. Such a belief is often
found among totemic tribes who imagine that their ancestors sprang from
their totemic animals or plants; but it is by no means confined to
them. Thus, to take instances, some of the Californian Indians, in whose
mythology the coyote or prairie-wolf is a leading personage, think that
they are descended from coyotes. At first they walked on all fours; then
they began to have some members of the human body, one finger, one toe,
one eye, one ear, and so on; then they got two fingers, two toes, two
eyes, two ears, and so forth; till at last, progressing from period to
period, they became perfect human beings. The loss of their tails, which
they still deplore, was produced by the habit of sitting upright. (H.R.
Schoolcraft, "Indian Tribes of the United States", IV. (Philadelphia,
1856), pages 224 sq.; compare id. V. page 217. The descent of some, not
all, Indians from coyotes is mentioned also by Friar Boscana, in (A.
Robinson's) "Life in California" (New York, 1846), page 299.)
Similarly Darwin thought that "the tail has disappeared in man and the
anthropomorphous apes, owing to the terminal portion having been injured
by friction during a long lapse of time; the basal and embedded portion
having been reduced and modified, so as to become suitable to the erect
or semi-erect position." (Charles Darwin, "The Descent of Man", Second
Edition (London, 1879), page 60.) The Turtle clam of the Iroquois think
that they are descended from real mud turtles which used to live in a
pool. One hot summer the pool dried up, and the mud turtles set out to
find another. A very fat turtle, waddling after the rest in the heat,
was much incommoded by the weight of his shell, till by a great effort
he heaved it off altogether. After that he gradually developed into a
man and became the progenitor of the Turtle clan. (E.A. Smith, "Myths
of the Iroquois", "Second Annual Report of the Bureau of Ethnology"
(Washington, 1883), page 77.) The Crawfish band of the Choctaws are
in like manner descended from real crawfish, which used to live under
ground, only coming up occasionally through the mud to the surface. Once
a party of Choctaws smoked them out, taught them the Choctaw language,
taught them to walk on two legs, made them cut off their toe nails and
pluck the hair from their bodies, after which they adopted them into the
tribe. But the rest of their kindred, the crawfish, are crawfish under
ground to this day. (Geo. Catlin, "North American Indians" 4 (London,
1844), II. page 128.) The Osage Indians universally believed that they
were descended from a male snail and a female beaver. A flood swept the
snail down to the Missouri and left him high and dry on the bank, where
the sun ripened him into a man. He met and married a beaver maid, and
from the pair the tribe of the Osages is descended. For a long time
these Indians retained a pious reverence for their animal ancestors and
refrained from hunting beavers, because in killing a beaver they killed
a brother of the Osages. But when white men came among them and offered
high prices for beaver skins, the Osages yielded to the temptation and
took the lives of their furry brethren. (Lewis and Clarke, "Travels to
the Source of the Missouri River" (London, 1815), I. 12 (Vol. I. pages
44 sq. of the London reprint, 1905).) The Carp clan of the Ootawak
Indians are descended from the eggs of a carp which had been deposited
by the fish on the banks of a stream and warmed by the sun. ("Lettres
Edifiantes et Curieuses", Nouvelle Edition, VI. (Paris, 1781), page
171.) The Crane clan of the Ojibways are sprung originally from a pair
of cranes, which after long wanderings settled on the rapids at the
outlet of Lake Superior, where they were changed by the Great Spirit
into a man and woman. (L.H. Morgan, "Ancient Society" (London, 1877),
page 180.) The members of two Omaha clans were originally buffaloes and
lived, oddly enough, under water, which they splashed about, making it
muddy. And at death all the members of these clans went back to their
ancestors the buffaloes. So when one of them lay adying, his friends
used to wrap him up in a buffalo skin with the hair outside and say to
him, "You came hither from the animals and you are going back thither.
Do not face this way again. When you go, continue walking. (J. Owen
Dorsey, "Omaha Sociology", "Third Annual Report of the Bureau of
Ethnology" (Washington, 1884), pages 229, 233.) The Haida Indians of
Queen Charlotte Islands believe that long ago the raven, who is the
chief figure in the mythology of North-West America, took a cockle from
the beach and married it; the cockle gave birth to a female child, whom
the raven took to wife, and from their union the Indians were produced.
(G.M. Dawson, "Report on the Queen Charlotte Islands" (Montreal,
1880), pages 149B sq. ("Geological Survey of Canada"); F. Poole,
"Queen Charlotte Islands", page 136.) The Delaware Indians called the
rattle-snake their grandfather and would on no account destroy one of
these reptiles, believing that were they to do so the whole race of
rattle-snakes would rise up and bite them. Under the influence of the
white man, however, their respect for their grandfather the rattle-snake
gradually died away, till at last they killed him without compunction
or ceremony whenever they met him. The writer who records the old custom
observes that he had often reflected on the curious connection which
appears to subsist in the mind of an Indian between man and the brute
creation; "all animated nature," says he, "in whatever degree, is in
their eyes a great whole, from which they have not yet ventured to
separate themselves." (Rev. John Heckewelder, "An Account of the
History, Manners, and Customs, of the Indian Nations, who once inhabited
Pennsylvania and the Neighbouring States", "Transactions of the
Historical and Literary Committee of the American Philosophical
Society", I. (Philadelphia, 1819), pages 245, 247, 248.)
Some of the Indians of Peru boasted of being descended from the puma
or American lion; hence they adored the lion as a god and appeared at
festivals like Hercules dressed in the skins of lions with the heads
of the beasts fixed over their own. Others claimed to be sprung from
condors and attired themselves in great black and white wings, like
that enormous bird. (Garcilasso de la Vega, "First Part of the Royal
Commentaries of the Yncas", Vol. I. page 323, Vol. II. page 156
(Markham's translation).) The Wanika of East Africa look upon the hyaena
as one of their ancestors or as associated in some way with their origin
and destiny. The death of a hyaena is mourned by the whole people, and
the greatest funeral ceremonies which they perform are performed for
this brute. The wake held over a chief is as nothing compared to the
wake held over a hyaena; one tribe only mourns the death of its chief,
but all the tribes unite to celebrate the obsequies of a hyaena.
(Charles New, "Life, Wanderings, and Labours in Eastern Africa" (London,
1873) page 122.) Some Malagasy families claim to be descended from the
babacoote (Lichanotus brevicaudatus), a large lemur of grave appearance
and staid demeanour, which lives in the depth of the forest. When
they find one of these creatures dead, his human descendants bury it
solemnly, digging a grave for it, wrapping it in a shroud, and weeping
and lamenting over its carcase. A doctor who had shot a babacoote was
accused by the inhabitants of a Betsimisaraka village of having
killed "one of their grandfathers in the forest," and to appease their
indignation he had to promise not to skin the animal in the village
but in a solitary place where nobody could see him. (Father Abinal,
"Croyances fabuleuses des Malgaches", "Les Missions Catholiques", XII.
(1880), page 526; G.H. Smith, "Some Betsimisaraka superstitions", "The
Antananarivo Annual and Madagascar Magazine", No. 10 (Antananarivo,
1886), page 239; H.W. Little, "Madagascar, its History and People"
(London, 1884), pages 321 sq; A. van Gennep, "Tabou et Totemisme a
Madagascar" (Paris, 1904), pages 214 sqq.) Many of the Betsimisaraka
believe that the curious nocturnal animal called the aye-aye (Cheiromys
madagascariensis) "is the embodiment of their forefathers, and hence
will not touch it, much less do it an injury. It is said that when one
is discovered dead in the forest, these people make a tomb for it and
bury it with all the forms of a funeral. They think that if they attempt
to entrap it, they will surely die in consequence." (G.A. Shaw, "The
Aye-aye", "Antananarivo Annual and Madagascar Magazine", Vol. II.
(Antananarivo, 1896), pages 201, 203 (Reprint of the Second four
Numbers). Compare A. van Gennep, "Tabou et Totemisme a Madagascar",
pages 223 sq.) Some Malagasy tribes believe themselves descended from
crocodiles and accordingly they deem the formidable reptiles their
brothers. If one of these scaly brothers so far forgets the ties of
kinship as to devour a man, the chief of the tribe, or in his absence
an old man familiar with the tribal customs, repairs at the head of the
people to the edge of the water, and summons the family of the culprit
to deliver him up to the arm of justice. A hook is then baited and cast
into the river or lake. Next day the guilty brother or one of his family
is dragged ashore, formally tried, sentenced to death, and executed. The
claims of justice being thus satisfied, the dead animal is lamented
and buried like a kinsman; a mound is raised over his grave and a stone
marks the place of his head. (Father Abinal, "Croyances fabuleuses des
Malgaches", "Les Missions Catholiques", XII. (1880), page 527; A. van
Gennep, "Tabou et Totemisme a Madagascar", pages 281 sq.)
Amongst the Tshi-speaking tribes of the Gold Coast in West Africa the
Horse-mackerel family traces its descent from a real horse-mackerel whom
an ancestor of theirs once took to wife. She lived with him happily
in human shape on shore till one day a second wife, whom the man had
married, cruelly taunted her with being nothing but a fish. That hurt
her so much that bidding her husband farewell she returned to her old
home in the sea, with her youngest child in her arms, and never came
back again. But ever since the Horse-mackerel people have refrained from
eating horse-mackerels, because the lost wife and mother was a fish of
that sort. (A.B. Ellis, "The Tshi-speaking Peoples of the Gold Coast
of West Africa" (London, 1887), pages 208-11. A similar tale is told by
another fish family who abstain from eating the fish (appei) from which
they take their name (A.B. Ellis op. cit. pages 211 sq.).) Some of the
Land Dyaks of Borneo tell a similar tale to explain a similar custom.
"There is a fish which is taken in their rivers called a puttin, which
they would on no account touch, under the idea that if they did they
would be eating their relations. The tradition respecting it is, that a
solitary old man went out fishing and caught a puttin, which he dragged
out of the water and laid down in his boat. On turning round, he found
it had changed into a very pretty little girl. Conceiving the idea she
would make, what he had long wished for, a charming wife for his son,
he took her home and educated her until she was fit to be married. She
consented to be the son's wife cautioning her husband to use her well.
Some time after their marriage, however, being out of temper, he struck
her, when she screamed, and rushed away into the water; but not without
leaving behind her a beautiful daughter, who became afterwards the
mother of the race." (The Lord Bishop of Labuan, "On the Wild Tribes
of the North-West Coast of Borneo", "Transactions of the Ethnological
Society of London", New Series II. (London, 1863), pages 26 sq. Such
stories conform to a well-known type which may be called the Swan-Maiden
type of story, or Beauty and the Beast, or Cupid and Psyche. The
occurrence of stories of this type among totemic peoples, such as the
Tshi-speaking negroes of the Gold Coast, who tell them to explain their
totemic taboos, suggests that all such tales may have originated in
totemism. I shall deal with this question elsewhere.)
Members of a clan in Mandailing, on the west coast of Sumatra, assert
that they are descended from a tiger, and at the present day, when a
tiger is shot, the women of the clan are bound to offer betel to the
dead beast. When members of this clan come upon the tracks of a tiger,
they must, as a mark of homage, enclose them with three little sticks.
Further, it is believed that the tiger will not attack or lacerate his
kinsmen, the members of the clan. (H. Ris, "De Onderafdeeling Klein
Mandailing Oeloe en Pahantan en hare Bevolking met uitzondering van
de Oeloes", "Bijdragen tot de Tall- Land- en Volkenkunde van
Nederlansch-Indie, XLVI." (1896), page 473.) The Battas of Central
Sumatra are divided into a number of clans which have for their totems
white buffaloes, goats, wild turtle-doves, dogs, cats, apes, tigers, and
so forth; and one of the explanations which they give of their totems
is that these creatures were their ancestors, and that their own souls
after death can transmigrate into the animals. (J.B. Neumann, "Het
Pane en Bila-stroomgebied op het eiland Sumatra", "Tijdschrift van het
Nederlandsch Aardrijkskundig Genootschap", Tweede Serie, III. Afdeeling,
Meer uitgebreide Artikelen, No. 2 (Amsterdam, 1886), pages 311 sq.;
id. ib. Tweede Serie, IV. Afdeeling, Meer uitgebreide Artikelen, No. 1
(Amsterdam, 1887), pages 8 sq.) In Amboyna and the neighbouring islands
the inhabitants of some villages aver that they are descended from
trees, such as the Capellenia moluccana, which had been fertilised by
the Pandion Haliaetus. Others claim to be sprung from pigs, octopuses,
crocodiles, sharks, and eels. People will not burn the wood of the trees
from which they trace their descent, nor eat the flesh of the animals
which they regard as their ancestors. Sicknesses of all sorts are
believed to result from disregarding these taboos. (J.G.F. Riedel, "De
sluik- en kroesharige rassen tusschen Selebes en Papua" (The Hague,
1886), pages 32, 61; G.W.W.C. Baron van Hoevell, "Ambon en meer
bepaaldelijk de Oeliasers" (Dordrecht, 1875), page 152.) Similarly in
Ceram persons who think they are descended from crocodiles, serpents,
iguanas, and sharks will not eat the flesh of these animals. (J.G.F.
Riedel op. cit. page 122.) Many other peoples of the Molucca Islands
entertain similar beliefs and observe similar taboos. (J.G.F. Riedel
"De sluik- en kroesharige rassen tusschen Selebes en Papua" (The Hague,
1886), pages 253, 334, 341, 348, 412, 414, 432.) Again, in Ponape, one
of the Caroline Islands, "The different families suppose themselves to
stand in a certain relation to animals, and especially to fishes, and
believe in their descent from them. They actually name these animals
'mothers'; the creatures are sacred to the family and may not be
injured. Great dances, accompanied with the offering of prayers, are
performed in their honour. Any person who killed such an animal would
expose himself to contempt and punishment, certainly also to the
vengeance of the insulted deity." Blindness is commonly supposed to
be the consequence of such a sacrilege. (Dr Hahl, "Mittheilungen
uber Sitten und rechtliche Verhaltnisse auf Ponape", "Ethnologisches
Notizblatt", Vol. II. Heft 2 (Berlin, 1901), page 10.)
Some of the aborigines of Western Australia believe that their ancestors
were swans, ducks, or various other species of water-fowl before they
were transformed into men. (Captain G. Grey, "A Vocabulary of the
Dialects of South Western Australia", Second Edition (London, 1840),
pages 29, 37, 61, 63, 66, 71.) The Dieri tribe of Central Australia, who
are divided into totemic clans, explain their origin by the following
legend. They say that in the beginning the earth opened in the midst of
Perigundi Lake, and the totems (murdus or madas) came trooping out one
after the other. Out came the crow, and the shell parakeet, and the emu,
and all the rest. Being as yet imperfectly formed and without members
or organs of sense, they laid themselves down on the sandhills which
surrounded the lake then just as they do now. It was a bright day and
the totems lay basking in the sunshine, till at last, refreshed and
invigorated by it, they stood up as human beings and dispersed in all
directions. That is why people of the same totem are now scattered all
over the country. You may still see the island in the lake out of which
the totems came trooping long ago. (A.W. Howitt, "Native Tribes of
South-East Australia" (London, 1904), pages 476, 779 sq.) Another
Dieri legend relates how Paralina, one of the Mura-Muras or mythical
predecessors of the Dieri, perfected mankind. He was out hunting
kangaroos, when he saw four incomplete beings cowering together. So he
went up to them, smoothed their bodies, stretched out their limbs, slit
up their fingers and toes, formed their mouths, noses, and eyes, stuck
ears on them, and blew into their ears in order that they might hear.
Having perfected their organs and so produced mankind out of these
rudimentary beings, he went about making men everywhere. (A.W. Howitt
op. cit., pages 476, 780 sq.) Yet another Dieri tradition sets forth how
the Mura-Mura produced the race of man out of a species of small black
lizards, which may still be met with under dry bark. To do this he
divided the feet of the lizards into fingers and toes, and, applying
his forefinger to the middle of their faces, created a nose; likewise he
gave them human eyes, mouths and ears. He next set one of them upright,
but it fell down again because of its tail; so he cut off its tail and
the lizard then walked on its hind legs. That is the origin of mankind.
(S. Gason, "The Manners and Customs of the Dieyerie tribe of Australian
Aborigines", "Native Tribes of South Australia" (Adelaide, 1879),
page 260. This writer fell into the mistake of regarding the Mura-Mura
(Mooramoora) as a Good-Spirit instead of as one of the mythical but more
or less human predecessors of the Dieri in the country. See A.W. Howitt,
"Native Tribes of South-East Australia", pages 475 sqq.)
The Arunta tribe of Central Australia similarly tell how in the
beginning mankind was developed out of various rudimentary forms of
animal life. They say that in those days two beings called Ungambikula,
that is, "out of nothing," or "self-existing," dwelt in the western sky.
From their lofty abode they could see, far away to the east, a number
of inapertwa creatures, that is, rudimentary human beings or incomplete
men, whom it was their mission to make into real men and women. For at
that time there were no real men and women; the rudimentary creatures
(inapertwa) were of various shapes and dwelt in groups along the shore
of the salt water which covered the country. These embryos, as we may
call them, had no distinct limbs or organs of sight, hearing, and smell;
they did not eat food, and they presented the appearance of human beings
all doubled up into a rounded mass, in which only the outline of the
different parts of the body could be vaguely perceived. Coming down
from their home in the western sky, armed with great stone knives, the
Ungambikula took hold of the embryos, one after the other. First of all
they released the arms from the bodies, then making four clefts at the
end of each arm they fashioned hands and fingers; afterwards legs, feet,
and toes were added in the same way. The figure could now stand; a nose
was then moulded and the nostrils bored with the fingers. A cut with the
knife made the mouth, which was pulled open several times to render it
flexible. A slit on each side of the face separated the upper and lower
eye-lids, disclosing the eyes, which already existed behind them; and
a few strokes more completed the body. Thus out of the rudimentary
creatures were formed men and women. These rudimentary creatures or
embryos, we are told, "were in reality stages in the transformation
of various animals and plants into human beings, and thus they were
naturally, when made into human beings, intimately associated with the
particular animal or plant, as the case may be, of which they were the
transformations--in other words, each individual of necessity belonged
to a totem, the name of which was of course that of the animal or plant
of which he or she was a transformation." However, it is not said
that all the totemic clans of the Arunta were thus developed; no such
tradition, for example, is told to explain the origin of the important
Witchetty Grub clan. The clans which are positively known, or at least
said, to have originated out of embryos in the way described are the
Plum Tree, the Grass Seed, the Large Lizard, the Small Lizard, the
Alexandra Parakeet, and the Small Rat clans. When the Ungambikula had
thus fashioned people of these totems, they circumcised them all, except
the Plum Tree men, by means of a fire-stick. After that, having done the
work of creation or evolution, the Ungambikula turned themselves
into little lizards which bear a name meaning "snappers-up of flies."
(Baldwin Spencer and F.J. Gillen, "Native Tribes of Central Australia"
(London, 1899), pages 388 sq.; compare id., "Northern Tribes of Central
Australia" (London, 1904), page 150.)
This Arunta tradition of the origin of man, as Messrs Spencer and
Gillen, who have recorded it, justly observe, "is of considerable
interest; it is in the first place evidently a crude attempt to describe
the origin of human beings out of non-human creatures who were of
various forms; some of them were representatives of animals, others of
plants, but in all cases they are to be regarded as intermediate stages
in the transition of an animal or plant ancestor into a human individual
who bore its name as that of his or her totem." (Baldwin Spencer and
F.J. Gillen, "Native Tribes of Central Australia", pages 391 sq.) In a
sense these speculations of the Arunta on their own origin may be said
to combine the theory of creation with the theory of evolution; for
while they represent men as developed out of much simpler forms of life,
they at the same time assume that this development was effected by the
agency of two powerful beings, whom so far we may call creators. It is
well known that at a far higher stage of culture a crude form of
the evolutionary hypothesis was propounded by the Greek philosopher
Empedocles. He imagined that shapeless lumps of earth and water, thrown
up by the subterranean fires, developed into monstrous animals, bulls
with the heads of men, men with the heads of bulls, and so forth; till
at last, these hybrid forms being gradually eliminated, the various
existing species of animals and men were evolved. (E. Zeller, "Die
Philosophie der Griechen", I.4 (Leipsic, 1876), pages 718 sq.; H. Ritter
et L. Preller, "Historia Philosophiae Graecae et Romanae ex fontium
locis contexta" 5, pages 102 sq. H. Diels, "Die Fragmente der
Vorsokratiker" 2, I. (Berlin, 1906), pages 190 sqq. Compare Lucretius "De
rerum natura", V. 837 sqq.) The theory of the civilised Greek of Sicily
may be set beside the similar theory of the savage Arunta of Central
Australia. Both represent gropings of the human mind in the dark abyss
of the past; both were in a measure grotesque anticipations of the
modern theory of evolution.
In this essay I have made no attempt to illustrate all the many various
and divergent views which primitive man has taken of his own origin. I
have confined myself to collecting examples of two radically different
views, which may be distinguished as the theory of creation and the
theory of evolution. According to the one, man was fashioned in his
existing shape by a god or other powerful being; according to the other
he was evolved by a natural process out of lower forms of animal life.
Roughly speaking, these two theories still divide the civilised world
between them. The partisans of each can appeal in support of their view
to a large consensus of opinion; and if truth were to be decided by
weighing the one consensus against the other, with "Genesis" in the
one scale and "The Origin of Species" in the other, it might perhaps be
found, when the scales were finally trimmed, that the balance hung very
even between creation and evolution.
X. THE INFLUENCE OF DARWIN ON THE STUDY OF ANIMAL EMBRYOLOGY. By A.
Sedgwick, M.A., F.R.S.
Professor of Zoology and Comparative Anatomy in the University of
Cambridge.
The publication of "The Origin of Species" ushered in a new era in the
study of Embryology. Whereas, before the year 1859 the facts of anatomy
and development were loosely held together by the theory of types, which
owed its origin to the great anatomists of the preceding generation,
to Cuvier, L. Agassiz, J. Muller, and R. Owen, they were now combined
together into one organic whole by the theory of descent and by the
hypothesis of recapitulation which was deduced from that theory. The
view (First clearly enunciated by Fritz Muller in his well-known work,
"Fur Darwin", Leipzig, 1864; (English Edition, "Facts for Darwin",
1869).) that a knowledge of embryonic and larval histories would lay
bare the secrets of race-history and enable the course of evolution
to be traced, and so lead to the discovery of the natural system of
classification, gave a powerful stimulus to morphological study in
general and to embryological investigation in particular. In Darwin's
words: "Embryology rises greatly in interest, when we look at the embryo
as a picture, more or less obscured, of the progenitor, either in its
adult or larval state, of all the members of the same great class."
("Origin" (6th edition), page 396.) In the period under consideration
the output of embryological work has been enormous. No group of the
animal kingdom has escaped exhaustive examination and no effort has been
spared to obtain the embryos of isolated and out of the way forms, the
development of which might have an important bearing upon questions
of phylogeny and classification. Marine zoological stations have been
established, expeditions have been sent to distant countries, and the
methods of investigation have been greatly improved. The result of this
activity has been that the main features of the developmental history
of all the most important animals are now known and the curiosity as to
developmental processes, so greatly excited by the promulgation of the
Darwinian theory, has to a considerable extent been satisfied.
To what extent have the results of this vast activity fulfilled the
expectations of the workers who have achieved them? The Darwin centenary
is a fitting moment at which to take stock of our position. In this
inquiry we shall leave out of consideration the immense and intensely
interesting additions to our knowledge of Natural History. These may be
said to constitute a capital fund upon which philosophers, poets and
men of science will draw for many generations. The interest of Natural
History existed long before Darwinian evolution was thought of and
will endure without any reference to philosophic speculations. She is
a mistress in whose face are beauties and in whose arms are delights
elsewhere unattainable. She is and always has been pursued for her own
sake without any reference to philosophy, science, or utility.
Darwin's own views of the bearing of the facts of embryology upon
questions of wide scientific interest are perfectly clear. He writes
("Origin" (6th edition), page 395.):
"On the other hand it is highly probable that with many animals the
embryonic or larval stages show us, more or less completely, the
condition of the progenitor of the whole group in its adult state. In
the great class of the Crustacea, forms wonderfully distinct from each
other, namely, suctorial parasites, cirripedes, entomostraca, and even
the malacostraca, appear at first as larvae under the nauplius-form; and
as these larvae live and feed in the open sea, and are not adapted for
any peculiar habits of life, and from other reasons assigned by Fritz
Muller, it is probable that at some very remote period an independent
adult animal, resembling the Nauplius, existed, and subsequently
produced, along several divergent lines of descent, the above-named
great Crustacean groups. So again it is probable, from what we know of
the embryos of mammals, birds, fishes, and reptiles, that these animals
are the modified descendants of some ancient progenitor, which was
furnished in its adult state with branchiae, a swim-bladder, four
fin-like limbs, and a long tail, all fitted for an aquatic life.
"As all the organic beings, extinct and recent, which have ever lived,
can be arranged within a few great classes; and as all within each
class have, according to our theory, been connected together by fine
gradations, the best, and, if our collections were nearly perfect, the
only possible arrangement, would be genealogical; descent being the
hidden bond of connexion which naturalists have been seeking under the
term of the Natural System. On this view we can understand how it is
that, in the eyes of most naturalists, the structure of the embryo is
even more important for classification than that of the adult. In two or
more groups of animals, however much they may differ from each other
in structure and habits in their adult condition, if they pass through
closely similar embryonic stages, we may feel assured that they all are
descended from one parent-form, and are therefore closely related.
Thus, community in embryonic structure reveals community of descent; but
dissimilarity in embryonic development does not prove discommunity of
descent, for in one of two groups the developmental stages may have been
suppressed, or may have been so greatly modified through adaptation to
new habits of life, as to be no longer recognisable. Even in groups, in
which the adults have been modified to an extreme degree, community of
origin is often revealed by the structure of the larvae; we have seen,
for instance, that cirripedes, though externally so like shell-fish,
are at once known by their larvae to belong to the great class of
crustaceans. As the embryo often shows us more or less plainly the
structure of the less modified and ancient progenitor of the group, we
can see why ancient and extinct forms so often resemble in their
adult state the embryos of existing species of the same class. Agassiz
believes this to be a universal law of nature; and we may hope hereafter
to see the law proved true. It can, however, be proved true only in
those cases in which the ancient state of the progenitor of the group
has not been wholly obliterated, either by successive variations having
supervened at a very early period of growth, or by such variations
having been inherited at an earlier stage than that at which they first
appeared. It should also be borne in mind, that the law may be true,
but yet, owing to the geological record not extending far enough back
in time, may remain for a long period, or for ever, incapable of
demonstration. The law will not strictly hold good in those cases in
which an ancient form became adapted in its larval state to some special
line of life, and transmitted the same larval state to a whole group of
descendants; for such larvae will not resemble any still more ancient
form in its adult state."
As this passage shows, Darwin held that embryology was of interest
because of the light it seems to throw upon ancestral history
(phylogeny) and because of the help it would give in enabling us to
arrive at a natural system of classification. With regard to the latter
point, he quotes with approval the opinion that "the structure of
the embryo is even more important for classification than that of the
adult." What justification is there for this view? The phase of life
chosen for the ordinary anatomical and physiological studies, namely,
the adult phase, is merely one of the large number of stages of
structure through which the organism passes. By far the greater number
of these are included in what is specially called the developmental
or (if we include larvae with embryos) embryonic period, for the
developmental changes are more numerous and take place with greater
rapidity at the beginning of life than in its later periods. As each of
these stages is equal in value, for our present purpose, to the adult
phase, it clearly follows that if there is anything in the view that
the anatomical study of organisms is of importance in determining their
mutual relations, the study of the organism in its various embryonic
(and larval) stages must have a greater importance than the study of the
single and arbitrarily selected stage of life called the adult.
But a deeper reason than this has been assigned for the importance of
embryology in classification. It has been asserted, and is implied by
Darwin in the passage quoted, that the ancestral history is repeated
in a condensed form in the embryonic, and that a study of the latter
enables us to form a picture of the stages of structure through which
the organism has passed in its evolution. It enables us on this view to
reconstruct the pedigrees of animals and so to form a genealogical tree
which shall be the true expression of their natural relations.
The real question which we have to consider is to what extent the
embryological studies of the last 50 years have confirmed or rendered
probable this "theory of recapitulation." In the first place it must
be noted that the recapitulation theory is itself a deduction from the
theory of evolution. The facts of embryology, particularly of vertebrate
embryology, and of larval history receive, it is argued, an explanation
on the view that the successive stages of development are, on the
whole, records of adult stages of structure which the species has passed
through in its evolution. Whether this statement will bear a critical
verbal examination I will not now pause to inquire, for it is more
important to determine whether any independent facts can be alleged in
favour of the theory. If it could be shown, as was stated to be the case
by L. Agassiz, that ancient and extinct forms of life present features
of structure now only found in embryos, we should have a body of facts
of the greatest importance in the present discussion. But as Huxley (See
Huxley's "Scientific Memoirs", London, 1898, Vol. I. page 303: "There is
no real parallel between the successive forms assumed in the development
of the life of the individual at present, and those which have appeared
at different epochs in the past." See also his Address to the
Geological Society of London (1862) 'On the Palaeontological Evidence of
Evolution', ibid. Vol. II. page 512.) has shown and as the whole course
of palaeontological and embryological investigation has demonstrated, no
such statement can be made. The extinct forms of life are very similar
to those now existing and there is nothing specially embryonic about
them. So that the facts, as we know them, lend no support to theory.
But there is another class of facts which have been alleged in favour
of the theory, viz. the facts which have been included in the
generalisation known as the Law of v. Baer. The law asserts that embryos
of different species of animals of the same group are more alike
than the adults and that, the younger the embryo, the greater are the
resemblances. If this law could be established it would undoubtedly be
a strong argument in favour of the "recapitulation" explanation of the
facts of embryology. But its truth has been seriously disputed. If it
were true we should expect to find that the embryos of closely similar
species would be indistinguishable from one another, but this is
notoriously not the case. It is more difficult to meet the assertion
when it is made in the form given above, for here we are dealing with
matters of opinion. For instance, no one would deny that the embryo of a
dogfish is different from the embryo of a rabbit, but there is room for
difference of opinion when it is asserted that the difference is less
than the difference between an adult dogfish and an adult rabbit. It
would be perfectly true to say that the differences between the embryos
concern other organs more than do the differences between the adults,
but who is prepared to affirm that the presence of a cephalic coelom and
of cranial segments, of external gills, of six gill slits, of the kidney
tubes opening into the muscle-plate coelom, of an enormous yolk-sac, of
a neurenteric canal, and the absence of any trace of an amnion, of an
allantois and of a primitive streak are not morphological facts of as
high an import as those implied by the differences between the adults?
The generalisation undoubtedly had its origin in the fact that there is
what may be called a family resemblance between embryos and larvae, but
this resemblance, which is by no means exact, is largely superficial and
does not extend to anatomical detail.
It is useless to say, as Weismann has stated ("The Evolution Theory",
by A. Weismann, English Translation, Vol. II. page 176, London, 1904.),
that "it cannot be disputed that the rudiments [vestiges his translator
means] of gill-arches and gill-clefts, which are peculiar to one stage
of human ontogeny, give us every ground for concluding that we possessed
fish-like ancestors." The question at issue is: did the pharyngeal
arches and clefts of mammalian embryos ever discharge a branchial
function in an adult ancestor of the mammalia? We cannot therefore,
without begging the question at issue in the grossest manner, apply to
them the terms "gill-arches" and "gill-clefts". That they are homologous
with the "gill-arches" and "gill-clefts" of fishes is true; but there
is no evidence to show that they ever discharged a branchial function.
Until such evidence is forthcoming, it is beside the point to say that
it "cannot be disputed" that they are evidence of a piscine ancestry.
It must, therefore, be admitted that one outcome of the progress of
embryological and palaeontological research for the last 50 years is
negative. The recapitulation theory originated as a deduction from the
evolution theory and as a deduction it still remains.
Let us before leaving the subject apply another test. If the evolution
theory and the recapitulation theory are both true, how is it that
living birds are not only without teeth but have no rudiments of teeth
at any stage of their existence? How is it that the missing digits in
birds and mammals, the missing or reduced limb of snakes and whales, the
reduced mandibulo-hyoid cleft of elasmobranch fishes are not present or
relatively more highly developed in the embryo than in the adult? How
is it that when a marked variation, such as an extra digit, or a reduced
limb, or an extra segment, makes its appearance, it is not confined to
the adult but can be seen all through the development? All the clear
evidence we can get tends to show that marked variations, whether of
reduction or increase, of organs are manifest during the whole of the
development of the organ and do not merely affect the adult. And on
reflection we see that it could hardly be otherwise. All such evidence
is distinctly at variance with the theory of recapitulation, at least
as applied to embryos. In the case of larvae of course the case will be
different, for in them the organs are functional, and reduction in the
adult will not be accompanied by reduction in the larva unless a change
in the conditions of life of the larva enables it to occur.
If after 50 years of research and close examination of the facts of
embryology the recapitulation theory is still without satisfactory
proof, it seems desirable to take a wider sweep and to inquire whether
the facts of embryology cannot be included in a larger category.
As has been pointed out by Huxley, development and life are
co-extensive, and it is impossible to point to any period in the life of
an organism when the developmental changes cease. It is true that these
changes take place more rapidly at the commencement of life, but they
are never wholly absent, and those which occur in the later or so-called
adult stages of life do not differ in their essence, however much they
may differ in their degree, from those which occur during the embryonic
and larval periods. This consideration at once brings the changes of
the embryonic period into the same category as those of the adult and
suggests that an explanation which will account for the one will account
for the other. What then is the problem we are dealing with? Surely
it is this: Why does an organism as soon as it is established at the
fertilisation of the ovum enter upon a cycle of transformations which
never cease until death puts an end to them? In other words what is
the meaning of that cycle of changes which all organisms present in a
greater or less degree and which constitute the very essence of life?
It is impossible to give an answer to this question so long as we remain
within the precincts of Biology--and it is not my present purpose to
penetrate beyond those precincts into the realms of philosophy. We have
to do with an ultimate biological fact, with a fundamental property of
living matter, which governs and includes all its other properties. How
may this property be stated? Thus: it is a property of living matter
to react in a remarkable way to external forces without undergoing
destruction. The life-cycle, of which the embryonic and larval periods
are a part, consists of the orderly interaction between the organism
and its environment. The action of the environment produces certain
morphological changes in the organism. These changes enable the organism
to come into relation with new external forces, to move into what
is practically a new environment, which in its turn produces further
structural changes in the organism. These in their turn enable, indeed
necessitate, the organism to move again into a new environment, and so
the process continues until the structural changes are of such a nature
that the organism is unable to adapt itself to the environment in which
it finds itself. The essential condition of success in this process is
that the organism should always shift into the environment to which its
new structure is suited--any failure in this leading to the impairment
of the organism. In most cases the shifting of the environment is a
very gradual process (whether consisting in the very slight and gradual
alteration in the relation of the embryo as a whole to the egg-shell or
uterine wall, or in the relations of its parts to each other, or in
the successive phases of adult life), and the morphological changes in
connection with each step of it are but slight. But in some cases jumps
are made such as we find in the phenomena known as hatching, birth, and
metamorphosis.
This property of reacting to the environment without undergoing
destruction is, as has been stated, a fundamental property of organisms.
It is impossible to conceive of any matter, to which the term living
could be applied, being without it. And with this property of reacting
to the environment goes the further property of undergoing a change
which alters the relation of the organism to the old environment
and places it in a new environment. If this reasoning is correct, it
necessarily follows that this property must have been possessed by
living matter at its first appearance on the earth. In other words
living matter must always have presented a life-cycle, and the question
arises what kind of modification has that cycle undergone? Has it
increased or diminished in duration and complexity since organisms first
appeared on the earth? The current view is that the cycle was at first
very short and that it has increased in length by the evolutionary
creation of new adult phases, that these new phases are in addition to
those already existing and that each of them as it appears takes
over from the preceding adult phase the functional condition of the
reproductive organs. According to the same view the old adult phases are
not obliterated but persist in a more or less modified form as larval
stages. It is further supposed that as the life-history lengthens at one
end by the addition of new adult phases, it is shortened at the other by
the abbreviation of embryonic development and by the absorption of some
of the early larval stages into the embryonic period; but on the whole
the lengthening process has exceeded that of shortening, so that the
whole life-history has, with the progress of evolution, become longer
and more complicated.
Now there can be no doubt that the life-history of organisms has been
shortened in the way above suggested, for cases are known in which this
can practically be seen to occur at the present day. But the process
of lengthening by the creation of new stages at the other end of the
life-cycle is more difficult to conceive and moreover there is no
evidence for its having occurred. This, indeed, may have occurred, as
is suggested below, but the evidence we have seems to indicate
that evolutionary modification has proceeded by ALTERING and not by
SUPERSEDING: that is to say that each stage in the life-history, as we
see it to-day, has proceeded from a corresponding stage in a former era
by the modification of that stage and not by the creation of a new one.
Let me, at the risk of repetition, explain my meaning more fully by
taking a concrete illustration. The mandibulo-hyoid cleft (spiracle)
of the elasmobranch fishes, the lateral digits of the pig's foot, the
hind-limbs of whales, the enlarged digit of the ostrich's foot
are supposed to be organs which have been recently modified.
This modification is not confined to the final adult stage of the
life-history but characterises them throughout the whole of their
development. A stage with a reduced spiracle does not proceed in
development from a preceding stage in which the spiracle shows no
reduction: it is reduced at its first appearance. The same statement may
be made of organs which have entirely disappeared in the adult, such as
bird's teeth and snake's fore-limbs: the adult stage in which they have
disappeared is not preceded by embryonic stages in which the teeth and
limbs or rudiments of them are present. In fact the evidence indicates
that adult variations of any part are accompanied by precedent
variations in the same direction in the embryo. The evidence seems to
show, not that a stage is added on at the end of the life-history, but
only that some of the stages in the life-history are modified. Indeed,
on the wider view of development taken in this essay, a view which makes
it coincident with life, one would not expect often to find, even if new
stages are added in the course of evolution, that they are added at the
end of the series when the organism has passed through its reproductive
period. It is possible of course that new stages have been intercalated
in the course of the life-history, though it is difficult to see
how this has occurred. It is much more likely, if we may judge from
available evidence, that every stage has had its counterpart in
the ancestral form from which it has been derived by descent with
modification. Just as the adult phase of the living form differs, owing
to evolutionary modification, from the adult phase of the ancestor from
which it has proceeded, so each larval phase will differ for the same
reason from the corresponding larval phase in the life-history of the
ancestor. Inasmuch as the organism is variable at every stage of its
independent existence and is exposed to the action of natural selection
there is no reason why it should escape modification at any stage.
If there is any truth in these considerations it would seem to follow
that at the dawn of life the life-cycle must have been, either in posse
or in esse, at least as long as it is at the present time, and that
the peculiarity of passing through a series of stages in which new
characters are successively evolved is a primordial quality of living
matter.
Before leaving this part of the subject, it is necessary to touch upon
another aspect of it. What are these variations in structure which
succeed one another in the life-history of an organism? I am conscious
that I am here on the threshold of a chamber which contains the clue to
some of our difficulties, and that I cannot enter it. Looked at from
one point of view they belong to the class of genetic variations, which
depend upon the structure or constitution of the protoplasm; but instead
of appearing in different zygotes (A zygote is a fertilised ovum, i.e. a
new organism resulting from the fusion of an ovum and a spermatozoon.),
they are present in the same zygote though at different times in its
life-history. They are of the same order as the mutational variations
of the modern biologist upon which the appearance of a new character
depends. What is a genetic or mutational variation? It is a genetic
character which was not present in either of the parents. But these
"growth variations" were present in the parents, and in this they differ
from mutational variations. But what are genetic characters? They are
characters which must appear if any development occurs. They are usually
contrasted with "acquired characters," using the expression "acquired
character" in the Lamarckian sense. But strictly speaking they ARE
acquired characters, for the zygote at first has none of the characters
which it subsequently acquires, but only the power of acquiring them
in response to the action of the environment. But the characters so
acquired are not what we technically understand and what Lamarck meant
by "acquired characters." They are genetic characters, as defined above.
What then are Lamarck's "acquired characters"? They are variations in
genetic characters caused in a particular way. There are, in fact,
two kinds of variation in genetic characters depending on the mode
of causation. Firstly, there are those variations consequent upon a
variation in the constitution of the protoplasm of a particular zygote,
and independent of the environment in which the organism develops,
save in so far as this simply calls them forth: these are the so-called
genetic or mutational variations. Secondly, there are those variations
which occur in zygotes of similar germinal constitution and which are
caused solely by differences in the environment to which the individuals
are respectively exposed: these are the "acquired characters" of Lamarck
and of authors generally. In consequence of this double sense in which
the term "acquired characters" may be used, great confusion may and
does occur. If the protoplasm be compared to a machine, and the external
conditions to the hand that works the machine, then it may be said that,
as the machine can only work in one way, it can only produce one kind
of result (genetic character), but the particular form or quality
(Lamarckian "acquired character") of the result will depend upon the
hand that works the machine (environment), just as the quality of the
sound produced by a fiddle depends entirely upon the hand which plays
upon it. It would be improper to apply the term "mutation" to those
genetic characters which are not new characters or new variants of old
characters, but such genetic characters are of the same nature as
those characters to which the term mutation has been applied. It may be
noticed in passing that it is very questionable if the modern biologist
has acted in the real interests of science in applying the term mutation
in the sense in which he has applied it. The genetic characters of
organisms come from one of two sources: either they are old characters
and are due to the action of what we call inheritance or they are new
and are due to what we call variation. If the term mutation is applied
to the actual alteration of the machinery of the protoplasm, no
objection can be felt to its use; but if it be applied, as it is, to the
product of the action of the altered machine, viz. to the new genetic
character, it leads to confusion. Inheritance is the persistence of the
structure of the machine; characters are the products of the working of
the machine; variation in genetic characters is due to the alteration
(mutation) in the arrangement of the machinery, while variation in
acquired characters (Lamarckian) is due to differences in the mode of
working the machinery. The machinery when it starts (in the new zygote)
has the power of grinding out certain results, which we call the
characters of the organism. These appear at successive intervals
of time, and the orderly manifestation of them is what we call the
life-history of the organism. This brings us back to the question with
which we started this discussion, viz. what is the relation of these
variations in structure, which successively appear in an organism and
constitute its life-history, to the mutational variations which appear
in different organisms of the same brood or species. The question is
brought home to us when we ask what is a bud-sport, such as a nectarine
appearing on a peach-tree? From one point of view, it is simply a
mutation appearing in asexual reproduction; from another it is one of
these successional characters ("growth variations") which constitute
the life-history of the zygote, for it appears in the same zygote which
first produces a peach. Here our analogy of a machine which only works
in one way seems to fail us, for these bud-sports do not appear in all
parts of the organism, only in certain buds or parts of it, so that one
part of the zygotic machine would appear to work differently to another.
To discuss this question further would take us too far from our subject.
Suffice it to say that we cannot answer it, any more than we can this
further question of burning interest at the present day, viz. to
what extent and in what manner is the machine itself altered by the
particular way in which it is worked. In connection with this question
we can only submit one consideration: the zygotic machine can, by
its nature, only work once, so that any alteration in it can only be
ascertained by studying the replicas of it which are produced in the
reproductive organs.
It is a peculiarity that the result which we call the ripening of the
generative organs nearly always appears among the final products of the
action of the zygotic machine. It is remarkable that this should be
the case. What is the reason of it? The late appearance of functional
reproductive organs is almost a universal law, and the explanation of it
is suggested by expressing the law in another way, viz. that the machine
is almost always so constituted that it ceases to work efficiently
soon after the reproductive organs have sufficiently discharged their
function. Why this should occur we cannot explain: it is an ultimate
fact of nature, and cannot be included in any wider category. The
period during which the reproductive organs can act may be short as
in ephemerids or long as in man and trees, and there is no reason to
suppose that their action damages the vital machinery, though sometimes,
as in the case of annual plants (Metschnikoff), it may incidentally
do so; but, long or short, the cessation of their actions is always
a prelude to the end. When they and their action are impaired, the
organism ceases to react with precision to the environment, and the
organism as a whole undergoes retrogressive changes.
It has been pointed out above that there is reason to believe that at
the dawn of life the life-cycle was, EITHER IN ESSE OR IN POSSE, at
least as long as it is at the present time. The qualification implied by
the words in italics is necessary, for it is clearly possible that the
external conditions then existing were not suitable for the production
of all the stages of the potential life-history, and that what we
call organic evolution has consisted in a gradual evolution of new
environments to which the organism's innate capacity of change has
enabled it to adapt itself. We have warrant for this possibility in the
case of the Axolotl and in other similar cases of neoteny. And these
cases further bring home to us the fact, to which I have already
referred, that the full development of the functional reproductive
organs is nearly always associated with the final stages of the
life-history.
On this view of the succession of characters in the life-history of
organisms, how shall we explain the undoubted fact that the development
of buds hardly ever presents any phenomena corresponding to the
embryonic and larval changes? The reason is clearly this, that budding
usually occurs after the embryonic stage is past; when the characters of
embryonic life have been worked out by the machine. When it takes place
at an early stage in embryonic life, as it does in cases of so-called
embryonic fission, the product shows, either partly or entirely,
phenomena similar to those of embryonic development. The only case known
to me in which budding by the adult is accompanied by morphological
features similar to those displayed by embryos is furnished by the
budding of the medusiform spore-sacs of hydrozoon polyps. But this case
is exceptional, for here we have to do with an attempt, which fails, to
form a free-swimming organism, the medusa; and the vestiges which appear
in the buds are the umbrella-cavity, marginal tentacles, circular canal,
etc., of the medusa arrested in development.
But the question still remains, are there no cases in which, as implied
by the recapitulation theory, variations in any organ are confined to
the period in which the organ is functional and do not affect it in the
embryonic stages? The teeth of the whalebone whales may be cited as
a case in which this is said to occur; but here the teeth are only
imperfectly developed in the embryo and are soon absorbed. They have
been affected by the change which has produced their disappearance in
the adult, but not to complete extinction. Nor are they now likely to be
extinguished, for having become exclusively embryonic they are largely
protected from the action of natural selection. This consideration
brings up a most important aspect of the question, so far as
disappearing organs are concerned. Every organ is laid down at a certain
period in the embryo and undergoes a certain course of growth until
it obtains full functional development. When for any cause reduction
begins, it is affected at all stages of its growth, unless it has
functional importance in the larva, and in some cases its life is
shortened at one or both ends. In cases, as in that of the whale's
teeth, in which it entirely disappears in the adult, the latter part
of its life is cut off; in others, the beginning of its life may
be deferred. This happens, for instance, with the spiracle of many
Elasmobranchs, which makes its appearance after the hyobranchial cleft,
not before it as it should do, being anterior to it in position, and
as it does in the Amniota in which it shows no reduction in size as
compared with the other pharyngeal clefts. In those Elasmobranchs
in which it is absent in the adult but present in the embryo (e.g.
Carcharias) its life is shortened at both ends. Many more instances
of organs, of which the beginning and end have been cut off, might be
mentioned; e.g. the muscle-plate coelom of Aves, the primitive streak
and the neurenteric canal of amniote blastoderms. In yet other cases in
which the reduced organ is almost on the verge of disappearance, it
may appear for a moment and disappear more than once in the course of
development. As an instance of this striking phenomenon I may mention
the neurenteric canal of avine embryos, and the anterior neuropore of
Ascidians. Lastly the reduced organ may disappear in the developing
stages before it does so in the adult. As an instance of this may be
mentioned the mandibular palp of those Crustacea with zoaea larvae. This
structure disappears in the larva only to reappear in a reduced form in
later stages. In all these cases we are dealing with an organ which, we
imagine, attained a fuller functional development at some previous stage
in race-history, but in most of them we have no proof that it did so. It
may be, and the possibility must not be lost sight of, that these organs
never were anything else than functionless and that though they have
been got rid of in the adult by elimination in the course of time, they
have been able to persist in embryonic stages which are protected from
the full action of natural selection. There is no reason to suppose that
living matter at its first appearance differed from non-living matter
in possessing only properties conducive to its well-being and prolonged
existence. No one thinks that the properties of the various forms of
inorganic matter are all strictly related to external conditions.
Of what use to the diamond is its high specific gravity and high
refrangibility, and to gold of its yellow colour and great weight? These
substances continue to exist in virtue of other properties than these.
It is impossible to suppose that the properties of living matter at
its first appearance were all useful to it, for even now after aeons of
elimination we find that it possesses many useless organs and that
many of its relations to the external world are capable of considerable
improvement.
In writing this essay I have purposely refrained from taking a definite
position with regard to the problems touched. My desire has been
to write a chapter showing the influence of Darwin's work so far as
Embryology is concerned, and the various points which come up for
consideration in discussing his views. Darwin was the last man who would
have claimed finality for any of his doctrines, but he might fairly have
claimed to have set going a process of intellectual fermentation which
is still very far from completion.