It struck me that these Silchester observations made a valuable

contribution to a history of the earthworm’s life habits. For it

should be borne in mind that the soil covering the buried city is a

rich mould, which has been under cultivation for the last nine or ten

centuries, and is the kind of soil in which the earthworm finds his

best conditions and attains his greatest size and vigour. Consider

next that the soil in the deep pits and everywhere beneath the Roman

pavements is a cold, heavy, hardly-pressed earth undisturbed for many

centuries, unpierced by root of plant or ray of sun, and probably to

a great extent devoid of the microbic life which makes the upper soil

alive. When you turn over this long-buried soil with the spade it has

a heavy damp smell, but not the familiar earth-smell of _Clodothrix

odorifera_. Yet down in this dark dead soil the worms will insist on

descending, although their only way to it is through the few small

cylindrical holes they have succeeded in boring through the partially

rotted cement between the tiles, or where a minute stone has dropped

out of the tesserae pavements. Their descent into these difficult

places and down into the old pits involves long double journeys daily

when they are forced to come up to deposit their castings on the

surface.

What then is the force impelling them? Why do they leave a rich

feeding-ground for a poor one? I take these facts in their relation to

other well-known facts, as for example that of the quite extraordinary

difference in size and vigour and colouring in the earthworms

inhabiting different soils. They are like different species. Let us

take the case of the London earthworm to be found in every few square

yards of earth unbuilt on, even in the very heart of the City itself.

Judging from all the specimens I have examined, this worm attains to

about half the full normal size and is comparatively languid in his

movements and rarely exhibits the brilliant play of colours seen in

the large country worm in rich soil--the colour which is the sign of

intensity of life. Doubtless he was once a big vigorous worm, but that

was long ago in an old London, or Londineum, and he has had ample time

to degenerate. In this state he is now biding his time, under our feet,

and his time will come when our seven millions have faded or drifted

away; then indeed he will recover his power, and slowly, patiently,

unhasting and unresting, day and night, year by year, century after

century, he will labour to sink away brick and stone beneath the

surface and cover it all with a deep rich mould and a mantle of

everlasting verdure.

Then we have the earthworms inhabiting heaths and all sandy soils

throughout the land. They are no better than the London earthworms. One

day last autumn I found the gardener at the house in a pine wood where

I was staying at Ascot digging potatoes. I took a spade and went to him

and started digging for worms at his side. There was a magnificent crop

of potatoes, as it has been everywhere this autumn of 1918, but the

earthworms we turned up were few in number and very poor specimens. “It

is useless,” said the gardener, “to look for a big worm here--I never

see one. It is the sand that starves them.”

I am not sure that this is a sufficient explanation: in the rich soils

in these highly cultivated gardens in this heath and pine district

where wealthy people have their homes, the worms, one would think,

must find sufficient nourishment. It is more probable that their poor

condition is due to something inimical to earthworms in the sand itself.

On the chalk, where the soil is thin, as in the sheep-walks, the

earthworms are comparatively small in size, but vigorous and quick in

their movements amidst the interlacing fibrous roots of the close

turf. In the hollow places between the hills, where a deeper soil has

been formed, the worms attain to their full size--all which goes to

show that chalk itself is not inimical to worms. In heavy clays the

appearance of the worms show that the conditions are not favourable.

Thus we see that earthworms are perpetually invading and peopling all

soils, good and bad; also that if you have a piece of hard ground

barren of food for worms and free of worms, where for long years they

have not been permitted to exist, they will constantly flow in from all

the surrounding rich soils where worms abound and flourish in order

to get possession of it. The cause, I take it, is that the earthworm

abhors the soil frequented by other worms, which is impregnated with

the acid the worm secretes and discharges into the soil. The acid

spoils the ground for him, and he prefers to go outside into the most

barren and unsuitable places to remaining in it. And the perpetual

desire to get away and seek pastures new is the reason of the wide

distribution of the earthworm, of its universality, so that there is

not a clod on the surface of the earth without a worm for inhabitant.

Three or four days after witnessing the remarkable phenomenon I

described some pages back--the rush of hungry earthworms to secure

a windfall of leaves torn before their time from the trees and

consequently not well suited to their masticating powers--I paid a

visit at a country-house a few miles away, and found there one of the

finest lawns I had ever seen. The old Georgian house was built on an

eminence overlooking the valley and stood in the centre of a square

and perfectly flat piece of ground, which was all lawn; then the

ground sloped on all sides to a terrace, and slope and terrace were

all lawn too and one with the level ground above. The great extent and

marvellous smoothness of this lawn filled me with admiration--when

I saw it at a distance; but I no sooner set foot on it than I began

to quarrel with it. To begin with, the ground was hard; there was no

elastic, no real turf; it was like walking on flagstones. Nothing but

grass grew on that lawn, not in a matted turf, but each grass or grass

plant by itself, so that when looking closely down at one’s feet one

saw the hard ground between the blades and roots. On all that ground

there was not a daisy to be seen, nor any of the small creeping plants

and clovers usually found on lawns.

Before my visit was over I succeeded in getting hold of the gardener

and asked him how he managed to keep his large lawn so clean and

smooth. He took it that I was praising his work and began to tell me

what a tremendous task it was to keep it in that perfect condition.

“But I think,” said I, “that if you would call in the earthworms to

help you and did less yourself you would have a better lawn.”

At first he thought I was joking and was much amused. Earthworms, he

assured me, were the worst enemies of lawns--they made such a mess!

His greatest trouble was to keep them down. He was always going round

with a bucket of brine, particularly about the lower borders, where

they were always trying to come in, and poured the brine down their

holes. Brine was the best worm-killer he knew; and the result of his

care and use of it was that you wouldn’t be able to find a worm on all

that immense lawn.

I asked him if he could not understand that it was no pleasure to walk

or sit or lie on a lawn where the ground was always dry and hard in

spite of all the watering he gave it. To walk on his lawn tired and

depressed me, whereas on the chalk-hill behind the house I could walk

miles with pure delight, simply because it was a close-matted turf and

was felt beneath the feet like a pile-carpet drawn over a thick rubber

floor. It lifted me when I walked on it, and was better than the most

luxurious couch to lie on, to say nothing of the pleasure one received

from the sight of its small gem-like flowers and from its aromatic

scent. As to the castings, they were unpleasant only when the lawn was

wet in the morning, and only then when the grass was too thin. You do

not see the castings on the thick turf on the downs, although if you

take up a sod you find earthworms at the roots in abundance.

Well, he answered, a lawn could not have a turf like a chalk-hill fed

by sheep, because--such a turf wasn’t the right one for a lawn to have.

Then, as this seemed a rather poor argument, he suddenly brightened up

and said: “And what about the moles? Do you know that with a large lawn

like this, with grass fields all round it, you are always in danger of

getting a mole--that is to say if there are any earthworms to attract

him. And a mole can disfigure a lawn as much as if you had made a

furrow with a plough across it.”

No doubt he was right there; but when I said that moles could be kept

out by sinking a rabbit net to a depth of two or three feet beneath the

surface and would save a lot of labour and expense, he only smiled and

shook his head.

The gardener, like the gamekeeper, is never a person who will allow you

to teach him anything, but after our conversation I was more convinced

than ever that it would be better for the lawn if, instead of killing

and starving the worms, we were to feed them and allow them to make and

keep a turf.

With this idea in my mind I tried a fresh experiment. I pegged out

a strip of the lawn at the cottage, about ten feet wide, and ran a

cord on each side to keep it distinct from the rest of the ground,

and over that strip I sprinkled leaves from the acacia and other

trees abundantly. I examined the ground on the following day and

saw no change. Leaves were still lying thickly on the ground, and

it was impossible to tell whether any had been carried away or not.

The next day it was the same. On the morning of the third day there

was something new to note: it looked as if the worms inhabiting the

quartered-off ground had suddenly developed a wonderful vigour and

activity, or as if a rush of worms from all over the lawn to that

favoured spot had taken place. The ground was thickly sprinkled over

with castings, mostly under the herbage, although after a careful

search I could not find a single casting anywhere else on the lawn.

It was evident that the worms had been taking the leaves into their

runs and feeding greedily on them, and I confidently expected that

the result would be that in a little while the turf on the marked

strip of ground would be thicker, greener, more elastic to the tread.

Unfortunately I was obliged to leave the place when the experiment was

just at its beginning, so that nothing was proved; and I hope that

some reader of this paper, who possesses a lawn, or is about to form

one, will carry the matter further and try to find out whether or not

a better result may be had by encouraging the earthworms to work with

and for us instead of regarding them as enemies and trying to suppress

them.

INDEX

_Acherontia atropas_, 217-19

Adders, the quest of, 15;

dreaming of, 19;

reasons for not killing, 20-28;

swallowing their young, 21;

measuring, 25;

capturing, 28-9;

beautiful colours in, 29-32

Adder-stone, 16

Agouti, beauty of the, 288

Aldebaran, an intelligent visitor from, 37-40

Aldermaston, snake preserve at, 17

Ants, a danger to fledgelings, 5-6; 9-10; 13-14

_Aquilegia._ _See_ Columbine

_Ardea cinerea_ and _A. cocoi_. _See_ Heron

Arnold, Matthew, serpent poetry of, 195-7;

lines on fritillary, 331

Badger, encounter with a, 51-2

Barrett, Charles, on ants destroying fledgelings in Australia, 14

Bastard balm, beauty and rarity of the, 327

Bats, Pliny on, 33;

genealogy of, 33-6;

how Nature made, 37-40;

ferocity of, 41-2;

migration, 42-44;

sense organs, 44-6;

Cuvierand Spallanzani on extra senses in, 45-8;

J. G. Millais on faculties of, 49

Beddard, Dr. F. E., an authority on earthworms, 347

Bell’s _British Quadrupeds_, campaign against moles related in, 116

_Bicho moro._ _See_ Blister-beetle

Birds, stories about, 74-83

Bird’s-foot trefoil, on a prehistoric earthwork, 323-5

Blister-beetle, ravages of the, 309;

appearance and smell of, 309;

a rapacious fly enemy of, 311

Book of the Serpent, a, 186

Breydon Water, herons fishing in, 102

Britton, J., a story of a fox told by, 56

Browne, Sir Thomas, on fear of serpents, 178

Browning, grandfather of the poet, 330

Byron, potato with vinegar devoured by, 308

Caius, Dr., the British dogs of, 250

Cantharides, 309

Cat, friendship of, with rat, 234-7

Chaucer, 318

Chequered daffodil. _See_ Fritillary

Chillingham, the white bull of, his low place in the scheme of things, 34

Chinchilla, beauty and grace of, 287

_Clodothrix odorifera_, 349

Cobbe, Miss Frances Power, an admirer of Schopenhauer, 292

Columbine, the blue, in England, 328-31

Cormorant struggling with eel, 98;

as a pet, 233

_Crotalus durissus_, New England rattlesnake, 205

Cuvier, on senses of bats, 45-8

Daisies, on old Roman Road, 322

Danish farmer, imaginary conversation with a Wiltshire pig-keeper, 298-9

Darwin, on the origin of the domestic dog, 275;

on earthworms, 348-9

Daw, history of a tame, 77-8

Death by accident in wild life, 96

Death’s-head moth, seen in numbers, 217-19

Demeter, the Corn Mother, 312

Dog, the little red, character and anecdotes of, 238-46

Dogs, friendly with lamb, 128;

effect of muzzling order on, 247-264;

artificial instincts in, 272

Dolichotis, a Patagonian rodent, 287

Earthworms, effect of weed-killer on, 343;

habits of, in relation to lawns, 345-6;

London, 350-51;

heath and sandy soil, 351;

chalk soil, 351-2;

cause of wide distribution of, 352-6

Elsie Venner Infelix, 209

_Epicauta adspersa._ _See_ Blister-beetle

Fayrer, Sir Joseph, a great ophiologist, 197

Fer-de-lance, an impression of the, 188

Flea, origin of the, 36

Flowers, beauty and charm of wild, 316;

adorning waste lands and ruins, 322;

on an old Roman road, 323;

on a prehistoric earthwork, 323-5;

rare and local, 326

Fox, beauty of the, 50-54;

sentiment concerning the, 55;

a South American music-loving, 58;

adventures of a three-legged, 59-62

Fox terrier, character of the, 253

Fritillary, appearance of, seen growing in profusion, 331-4;

beauty and singularity of the, 334-6

Geranium, _G. pyrenaicum_, 327;

the blue, 327

Ghost-moth, dance of the, 221-2

Glanville, Ernest, on the African Icanti, 158-9

Goat’s-beard, various folk-names of, 317-18;

singular habit of, 318-22

Gould, earliest writer on habits of ants, 251

Grass of Parnassus, beauty of the, 327

Grey, Viscount, squirrels tamed by, 233

Guanaco, a pet, in Patagonia and its habits, 125

Guinea (or Ginny) flower. _See_ Fritillary

Guira cuckoo, a mouse-killer, 97

Hake, Dr. Gordon, serpent poetry of, 197-200

Hawk-moths, 217;

death’s-head, 217-19;

crimson underwing, 219-221;

humming-bird, 222-4

Hawthorne, Nathaniel, character of his genius, 203-4;

in search of a weed, 338

Heron, bathing, 93;

strange adventure with a, 94-6;

flight of the, 103;

a ghostly bird, 104;

as a table-bird, 106-12

Heronry, a great, 47

Holmes, Oliver Wendell, story of a serpent girl, 201-9

Hopley, Miss C. C, on the serpent’s tongue, 139;

her pet slow-worm, 233

Horse, habit of a tamed wild, 119-122;

twitching muscle in the, 229

House-martin, accidentally killed, 98

Humming-bird, flight in the, 47;

hawk-moth, 222-4

Huxley, on monographs, 190

Icanti, African serpent myth, 159

James, Henry, on living in a pine wood, 3

John-go-to-bed-at-noon, singular habit of, 316

Keats, serpent poetry of, 200

Kidd, Benjamin, humble-bees tamed by, 232, 280

Lacepede, on the serpent’s uses, 136

_Lagidium_, an Andean rodent, 287

Lang, Andrew, on drawing-room dogs, 292-4

Lawns, feeling about, 337;

Sir Walter Raleigh quoted, 337-8;

in relation to earthworms, 340-344

Leibnitz, on a talking dog, 279

Lemurs, beauty and docility of the, 286-7

Lindsay, Dr. Lauder, _Mental Evolution_ quoted, 279;

on the dog’s spiritual nature, 288

Long, Sir Walter, dog-muzzling order of, 252

Luys, Dr., the revolving mirror of, 149

_Macroglossa stellatarum_, 224

Maize Mother, ancient worship of the, 312

Mallow, geranium-leafed scented, 327

Marmoset, charm of the domesticated, 285

Marmot, the prairie, 287-8

Mental evolution of animals, 281

Merry-lee-dance-a-pole, folk-name of a hawk-moth, 222

Millais, J. G., on the senses of bats, 49

Mole, whether injurious or not, 113-118;

persecution of the, in France, 116;

impending destruction of the, 116;

the strenuous, 225-7;

twitching muscle of the, 227-31

Morris, Mowbray, on dogs and their detractors, 291

Mother of the Waters, the mythical serpent, 169

_Mus decumanus_, 233

Mushrooms, growing in rings, 164

Natterjack, music of the, 89

Nunn, Mr. Joseph, the sparrow’s friend, 114

_Origin of Species_, 214

Owl, its supernatural reputation, 165

Painted snipe, caught in a mussel-shell, 99

Peaches and peach-stones, 307

Pig, social disposition of the, 295;

a friendly, 297-302;

a forest animal, 298;

eating elder-berries, 301

Pine-snake, beauty and motions of the, 155

Pine woods, effect of living in, 1;

wild life in, 4-14

Pipit, a fascinated, 149

Potato, the wild, 303;

cultivated, 304;

eaten with oil and vinegar, 307;

ravages of the blister-beetle, 309-11;

Mother of the, 312;

manner of cooking the, in England, 313;

what the doctors say, 314

Raleigh, Sir Walter, a shining Elizabethan, 312;

his praise of gardens and lawns, 337-8

Rat, the unloved, 233;

friendship with cat, 234-7

Rice Mother, 312

Romanes, Dr., _Mental Evolution of Animals_, 281

Rooks, their loose social law, 79-83

Royal Society for the Protection of Birds: Bird and Tree Day essays by

school children, 6

Ruskin, on the serpent’s tongue, 134;

on the serpent myth, 153;

on serpent motions, 154

Russell, Dr., of Brighton, 1

Sanchoniathan, the Phoenician, 153, 191

Savernake Forest, a fox in, 52

Seal and conger eel, duel between, 98

Selous, on instinctive fear in horses, 176

Serpent, use of its tongue, 134-52;

myths of a great, 158-9, 169-71;

strangeness, 153;

origin and universality of worship, 161;

instinctive fear of the, 174-8;

Satanic theory, 178-80;

a Book of the, 186-91;

the, in literature, 191

Sheep, individuality in, 123;

a book-destroying, 124;

a friend of dogs, 127

Sheldrake, beauty of the, 108

Shelley, his _Witch of Atlas_, 157

Silchester, the forest of, 84;

excavation at, 347-9

Snake, a preserver of the, 16;

taming a wild, 91-2;

a frog-hunter, 144;

shyness, 192;

a tame, 280

Spallanzani, experiments on bats, 45-8

Sparrow-hawks, in pine wood, 4, 7

Spider, strategy of hunting, 145;

as a pet, 232

Squirrel, fable of a, 63-9;

adventures of a migrating, 70-73;

migratory impulses, 70;

taming the, 233;

volatile character of the, 286

Stradling, Dr. Arthur, on the serpent’s tongue, 139

Stag, lower than the bat, 34

Starlings, killed by sparrow-hawk, 8

Stoat, a water-vole hunting, 86

Tabley, Lord de, ghost-moth poetry of, 222

Tehuelches, children of the Patagonian, 163

Thoreau, on the squirrel, 286;

his “handful of rice” 297

Throstle, desire for worms of the caged, 75-7

Toad, the, as traveller, 84-9;

concert music and marriage customs, 88-9;

pleased to be caressed, 90;

tongue and fly-catching of, 90-1

Traherne, the Herefordshire mystic, 224

Tregarthen, J. C., anecdotes of fox and otters reared with hounds, 132

Twitching muscle, mole, 228-31;

dog, 228;

horse, 229;

man, 229-230;

hare, 231

Tyndall and Hindhead, 1

Tyrant-bird, rapacious habits of a, 97

Vernal squill, first appearance of, 327

Viper, _Vipera berus_. _See_ Adder

Vizcacha, account of the, 130

Wasps, spiteful temper, 210-12;

brilliant colouring, 213;

diabolical instincts of, 214

Waterton, on heron’s fishing, 93

White, Gilbert, on a tame snake, 280

Willughby, the ornithologist, 250

Wright, Sir Almroth, on our skin-scraping habit, 338

Youatt, on a strange dog superstition, 277

THE END

_Printed in Great Britain by_ R. & R. CLARK, LIMITED, _Edinburgh_.

Transcriber's Notes:

Italics are shown thus: _sloping_.

Variations in spelling and hyphenation are retained.

Perceived typographical errors have been changed.

The book of a naturalist · 第 20 / 20 段