XXVII. DARWINISM AND HISTORY. By J.B. Bury, Litt.D., LL.D.

Regius Professor of Modern History in the University of Cambridge.

1. Evolution, and the principles associated with the Darwinian theory,

could not fail to exert a considerable influence on the studies

connected with the history of civilised man. The speculations which

are known as "philosophy of history," as well as the sciences of

anthropology, ethnography, and sociology (sciences which though they

stand on their own feet are for the historian auxiliary), have been

deeply affected by these principles. Historiographers, indeed, have

with few exceptions made little attempt to apply them; but the growth

of historical study in the nineteenth century has been determined and

characterised by the same general principle which has underlain the

simultaneous developments of the study of nature, namely the GENETIC

idea. The "historical" conception of nature, which has produced the

history of the solar system, the story of the earth, the genealogies of

telluric organisms, and has revolutionised natural science, belongs

to the same order of thought as the conception of human history as

a continuous, genetic, causal process--a conception which has

revolutionised historical research and made it scientific. Before

proceeding to consider the application of evolutional principles, it

will be pertinent to notice the rise of this new view.

2. With the Greeks and Romans history had been either a descriptive

record or had been written in practical interests. The most eminent of

the ancient historians were pragmatical; that is, they regarded history

as an instructress in statesmanship, or in the art of war, or in morals.

Their records reached back such a short way, their experience was so

brief, that they never attained to the conception of continuous process,

or realised the significance of time; and they never viewed the history

of human societies as a phenomenon to be investigated for its own sake.

In the middle ages there was still less chance of the emergence of the

ideas of progress and development. Such notions were excluded by the

fundamental doctrines of the dominant religion which bounded and bound

men's minds. As the course of history was held to be determined from

hour to hour by the arbitrary will of an extra-cosmic person, there

could be no self-contained causal development, only a dispensation

imposed from without. And as it was believed that the world was within

no great distance from the end of this dispensation, there was no motive

to take much interest in understanding the temporal, which was to be

only temporary.

The intellectual movements of the fifteenth and sixteenth centuries

prepared the way for a new conception, but it did not emerge

immediately. The historians of the Renaissance period simply reverted to

the ancient pragmatical view. For Machiavelli, exactly as for Thucydides

and Polybius, the use of studying history was instruction in the art of

politics. The Renaissance itself was the appearance of a new culture,

different from anything that had gone before; but at the time men were

not conscious of this; they saw clearly that the traditions of classical

antiquity had been lost for a long period, and they were seeking to

revive them, but otherwise they did not perceive that the world had

moved, and that their own spirit, culture, and conditions were

entirely unlike those of the thirteenth century. It was hardly till the

seventeenth century that the presence of a new age, as different from

the middle ages as from the ages of Greece and Rome, was fully realised.

It was then that the triple division of ancient, medieval, and modern

was first applied to the history of western civilisation. Whatever

objections may be urged against this division, which has now become

almost a category of thought, it marks a most significant advance in

man's view of his own past. He has become conscious of the immense

changes in civilisation which have come about slowly in the course of

time, and history confronts him with a new aspect. He has to explain how

those changes have been produced, how the transformations were effected.

The appearance of this problem was almost simultaneous with the rise

of rationalism, and the great historians and thinkers of the eighteenth

century, such as Montesquieu, Voltaire, Gibbon, attempted to explain

the movement of civilisation by purely natural causes. These brilliant

writers prepared the way for the genetic history of the following

century. But in the spirit of the Aufklarung, that eighteenth-century

Enlightenment to which they belonged, they were concerned to judge all

phenomena before the tribunal of reason; and the apotheosis of "reason"

tended to foster a certain superior a priori attitude, which was

not favourable to objective treatment and was incompatible with

a "historical sense." Moreover the traditions of pragmatical

historiography had by no means disappeared.

3. In the first quarter of the nineteenth century the meaning of genetic

history was fully realised. "Genetic" perhaps is as good a word as can

be found for the conception which in this century was applied to so many

branches of knowledge in the spheres both of nature and of mind. It

does not commit us to the doctrine proper of evolution, nor yet to any

teleological hypothesis such as is implied in "progress." For history

it meant that the present condition of the human race is simply and

strictly the result of a causal series (or set of causal series)--a

continuous succession of changes, where each state arises causally out

of the preceding; and that the business of historians is to trace this

genetic process, to explain each change, and ultimately to grasp the

complete development of the life of humanity. Three influential writers,

who appeared at this stage and helped to initiate a new period

of research, may specially be mentioned. Ranke in 1824 definitely

repudiated the pragmatical view which ascribes to history the duties

of an instructress, and with no less decision renounced the function,

assumed by the historians of the Aufklarung, to judge the past; it

was his business, he said, merely to show how things really happened.

Niebuhr was already working in the same spirit and did more than any

other writer to establish the principle that historical transactions

must be related to the ideas and conditions of their age. Savigny about

the same time founded the "historical school" of law. He sought to show

that law was not the creation of an enlightened will, but grew out of

custom and was developed by a series of adaptations and rejections, thus

applying the conception of evolution. He helped to diffuse the notion

that all the institutions of a society or a notion are as closely

interconnected as the parts of a living organism.

4. The conception of the history of man as a causal development meant

the elevation of historical inquiry to the dignity of a science. Just

as the study of bees cannot become scientific so long as the student's

interest in them is only to procure honey or to derive moral lessons

from the labours of "the little busy bee," so the history of human

societies cannot become the object of pure scientific investigation so

long as man estimates its value in pragmatical scales. Nor can it become

a science until it is conceived as lying entirely within a sphere

in which the law of cause and effect has unreserved and unrestricted

dominion. On the other hand, once history is envisaged as a causal

process, which contains within itself the explanation of the development

of man from his primitive state to the point which he has reached, such

a process necessarily becomes the object of scientific investigation and

the interest in it is scientific curiosity.

At the same time, the instruments were sharpened and refined. Here Wolf,

a philologist with historical instinct, was a pioneer. His "Prolegomena"

to Homer (1795) announced new modes of attack. Historical investigation

was soon transformed by the elaboration of new methods.

5. "Progress" involves a judgment of value, which is not involved in the

conception of history as a genetic process. It is also an idea distinct

from that of evolution. Nevertheless it is closely related to the ideas

which revolutionised history at the beginning of the last century;

it swam into men's ken simultaneously; and it helped effectively to

establish the notion of history as a continuous process and to emphasise

the significance of time. Passing over earlier anticipations, I may

point to a "Discours" of Turgot (1750), where history is presented as a

process in which "the total mass of the human race" "marches continually

though sometimes slowly to an ever increasing perfection." That is

a clear statement of the conception which Turgot's friend Condorcet

elaborated in the famous work, published in 1795, "Esquisse d'un tableau

historique des progres de l'esprit humain". This work first treated with

explicit fulness the idea to which a leading role was to fall in the

ideology of the nineteenth century. Condorcet's book reflects the

triumphs of the Tiers etat, whose growing importance had also inspired

Turgot; it was the political changes in the eighteenth century which led

to the doctrine, emphatically formulated by Condorcet, that the masses

are the most important element in the historical process. I dwell

on this because, though Condorcet had no idea of evolution, the

pre-dominant importance of the masses was the assumption which made

it possible to apply evolutional principles to history. And it enabled

Condorcet himself to maintain that the history of civilisation, a

progress still far from being complete, was a development conditioned by

general laws.

6. The assimilation of society to an organism, which was a governing

notion in the school of Savigny, and the conception of progress,

combined to produce the idea of an organic development, in which the

historian has to determine the central principle or leading character.

This is illustrated by the apotheosis of democracy in Tocqueville's

"Democratie en Amerique", where the theory is maintained that "the

gradual and progressive development of equality is at once the past and

the future of the history of men." The same two principles are combined

in the doctrine of Spencer (who held that society is an organism,

though he also contemplated its being what he calls a "super-organic

aggregate") (A society presents suggestive analogies with an organism,

but it certainly is not an organism, and sociologists who draw

inferences from the assumption of its organic nature must fall into

error. A vital organism and a society are radically distinguished by the

fact that the individual components of the former, namely the cells,

are morphologically as well as functionally differentiated, whereas the

individuals which compose a society are morphologically homogeneous and

only functionally differentiated. The resemblances and the differences

are worked out in E. de Majewski's striking book "La Science de la

Civilisation", Paris, 1908.), that social evolution is a progressive

change from militarism to industrialism.

7. the idea of development assumed another form in the speculations of

German idealism. Hegel conceived the successive periods of history as

corresponding to the ascending phases or ideas in the self-evolution

of his Absolute Being. His "Lectures on the Philosophy of History" were

published in 1837 after his death. His philosophy had a considerable

effect, direct and indirect, on the treatment of history by historians,

and although he was superficial and unscientific himself in dealing with

historical phenomena, he contributed much towards making the idea of

historical development familiar. Ranke was influenced, if not by Hegel

himself, at least by the Idealistic philosophies of which Hegel's was

the greatest. He was inclined to conceive the stages in the process of

history as marked by incarnations, as it were, of ideas, and sometimes

speaks as if the ideas were independent forces, with hands and feet. But

while Hegel determined his ideas by a priori logic, Ranke obtained his

by induction--by a strict investigation of the phenomena; so that he

was scientific in his method and work, and was influenced by Hegelian

prepossessions only in the kind of significance which he was disposed

to ascribe to his results. It is to be noted that the theory of Hegel

implied a judgment of value; the movement was a progress towards

perfection.

8. In France, Comte approached the subject from a different side, and

exercised, outside Germany, a far wider influence than Hegel. The 4th

volume of his "Cours de philosophie positive", which appeared in 1839,

created sociology and treated history as a part of this new science,

namely as "social dynamics." Comte sought the key for unfolding

historical development, in what he called the social-psychological point

of view, and he worked out the two ideas which had been enunciated by

Condorcet: that the historian's attention should be directed not, as

hitherto, principally to eminent individuals, but to the collective

behaviour of the masses, as being the most important element in the

process; and that, as in nature, so in history, there are general laws,

necessary and constant, which condition the development. The two points

are intimately connected, for it is only when the masses are moved into

the foreground that regularity, uniformity, and law can be conceived

as applicable. To determine the social-psychological laws which

have controlled the development is, according to Comte, the task of

sociologists and historians.

9. The hypothesis of general laws operative in history was carried

further in a book which appeared in England twenty years later and

exercised an influence in Europe far beyond its intrinsic merit,

Buckle's "History of Civilisation in England" (1857-61). Buckle owed

much to Comte, and followed him, or rather outdid him, in regarding

intellect as the most important factor conditioning the upward

development of man, so that progress, according to him, consisted in the

victory of the intellectual over the moral laws.

10. The tendency of Comte and Buckle to assimilate history to the

sciences of nature by reducing it to general "laws," derived stimulus

and plausibility from the vista offered by the study of statistics, in

which the Belgian Quetelet, whose book "Sur l'homme" appeared in 1835,

discerned endless possibilities. The astonishing uniformities which

statistical inquiry disclosed led to the belief that it was only a

question of collecting a sufficient amount of statistical material, to

enable us to predict how a given social group will act in a particular

case. Bourdeau, a disciple of this school, looks forward to the time

when historical science will become entirely quantitative. The actions

of prominent individuals, which are generally considered to have altered

or determined the course of things, are obviously not amenable to

statistical computation or explicable by general laws. Thinkers like

Buckle sought to minimise their importance or explain them away.

11. These indications may suffice to show that the new efforts to

interpret history which marked the first half of the nineteenth century

were governed by conceptions closely related to those which were current

in the field of natural science and which resulted in the doctrine of

evolution. The genetic principle, progressive development, general

laws, the significance of time, the conception of society as an organic

aggregate, the metaphysical theory of history as the self-evolution of

spirit,--all these ideas show that historical inquiry had been advancing

independently on somewhat parallel lines to the sciences of nature. It

was necessary to bring this out in order to appreciate the influence of

Darwinism.

12. In the course of the dozen years which elapsed between the

appearances of "The Origin of Species" (observe that the first volume of

Buckle's work was published just two years before) and of "The Descent

of Man" (1871), the hypothesis of Lamarck that man is the co-descendant

with other species of some lower extinct form was admitted to have been

raised to the rank of an established fact by most thinkers whose brains

were not working under the constraint of theological authority.

One important effect of the discovery of this fact (I am not speaking

now of the Darwinian explanation) was to assign to history a definite

place in the coordinated whole of knowledge, and relate it more closely

to other sciences. It had indeed a defined logical place in systems

such as Hegel's and Comte's; but Darwinism certified its standing

convincingly and without more ado. The prevailing doctrine that man

was created ex abrupto had placed history in an isolated position,

disconnected with the sciences of nature. Anthropology, which deals with

the animal anthropos, now comes into line with zoology, and brings it

into relation with history. (It is to be observed that history is not

only different in scope but) not coextensive with anthropology IN TIME.

For it deals only with the development of man in societies, whereas

anthropology includes in its definition the proto-anthropic period

when anthropos was still non-social, whether he lived in herds like

the chimpanzee, or alone like the male ourang-outang. (It has been well

shown by Majewski that congregations--herds, flocks, packs, etc.--of

animals are not SOCIETIES; the characteristic of a society is

differentiation of function. Bee hives, ant hills, may be called

quasi-societies; but in their case the classes which perform distinct

functions are morphologically different.) Man's condition at the present

day is the result of a series of transformations, going back to the most

primitive phase of society, which is the ideal (unattainable) beginning

of history. But that beginning had emerged without any breach of

continuity from a development which carries us back to a quadrimane

ancestor, still further back (according to Darwin's conjecture) to a

marine animal of the ascidian type, and then through remoter periods to

the lowest form of organism. It is essential in this theory that though

links have been lost there was no break in the gradual development;

and this conception of a continuous progress in the evolution of

life, resulting in the appearance of uncivilised Anthropos, helped to

reinforce, and increase a belief in, the conception of the history of

civilised Anthropos as itself also a continuous progressive development.

13. Thus the diffusion of the Darwinian theory of the origin of man,

by emphasising the idea of continuity and breaking down the barriers

between the human and animal kingdoms, has had an important effect in

establishing the position of history among the sciences which deal with

telluric development. The perspective of history is merged in a larger

perspective of development. As one of the objects of biology is to find

the exact steps in the genealogy of man from the lowest organic form,

so the scope of history is to determine the stages in the unique

causal series from the most rudimentary to the present state of human

civilisation.

It is to be observed that the interest in historical research implied

by this conception need not be that of Comte. In the Positive Philosophy

history is part of sociology; the interest in it is to discover the

sociological laws. In the view of which I have just spoken, history

is permitted to be an end in itself; the reconstruction of the

genetic process is an independent interest. For the purpose of the

reconstruction, sociology, as well as physical geography, biology,

psychology, is necessary; the sociologist and the historian play

into each other's hands; but the object of the former is to establish

generalisations; the aim of the latter is to trace in detail a singular

causal sequence.

14. The success of the evolutional theory helped to discredit

the assumption or at least the invocation of transcendent causes.

Philosophically of course it is compatible with theism, but historians

have for the most part desisted from invoking the naive conception of a

"god in history" to explain historical movements. A historian may be a

theist; but, so far as his work is concerned, this particular belief is

otiose. Otherwise indeed (as was remarked above) history could not be a

science; for with a deus ex machina who can be brought on the stage to

solve difficulties scientific treatment is a farce. The transcendent

element had appeared in a more subtle form through the influence of

German philosophy. I noticed how Ranke is prone to refer to ideas as

if they were transcendent existences manifesting themselves in the

successive movements of history. It is intelligible to speak of certain

ideas as controlling, in a given period,--for instance, the idea of

nationality; but from the scientific point of view, such ideas have

no existence outside the minds of individuals and are purely psychical

forces; and a historical "idea," if it does not exist in this form, is

merely a way of expressing a synthesis of the historian himself.

15. From the more general influence of Darwinism on the place of history

in the system of human knowledge, we may turn to the influence of the

principles and methods by which Darwin explained development. It had

been recognised even by ancient writers (such as Aristotle and

Polybius) that physical circumstances (geography, climate) were factors

conditioning the character and history of a race or society. In the

sixteenth century Bodin emphasised these factors, and many subsequent

writers took them into account. The investigations of Darwin, which

brought them into the foreground, naturally promoted attempts to

discover in them the chief key to the growth of civilisation. Comte had

expressly denounced the notion that the biological methods of Lamarck

could be applied to social man. Buckle had taken account of natural

influences, but had relegated them to a secondary plane, compared with

psychological factors. But the Darwinian theory made it tempting to

explain the development of civilisation in terms of "adaptation to

environment," "struggle for existence," "natural selection," "survival

of the fittest," etc. (Recently O. Seeck has applied these principles to

the decline of Graeco-Roman civilisation in his "Untergang der antiken

Welt", 2 volumes, Berlin, 1895, 1901.)

The operation of these principles cannot be denied. Man is still an

animal, subject to zoological as well as mechanical laws. The dark

influence of heredity continues to be effective; and psychical

development had begun in lower organic forms,--perhaps with life itself.

The organic and the social struggles for existence are manifestations of

the same principle. Environment and climatic influence must be called in

to explain not only the differentiation of the great racial sections of

humanity, but also the varieties within these sub-species and, it may

be, the assimilation of distinct varieties. Ritter's "Anthropogeography"

has opened a useful line of research. But on the other hand, it is urged

that, in explaining the course of history, these principles do not take

us very far, and that it is chiefly for the primitive ultra-prehistoric

period that they can account for human development. It may be said

that, so far as concerns the actions and movements of men which are

the subject of recorded history, physical environment has ceased to act

mechanically, and in order to affect their actions must affect their

wills first; and that this psychical character of the causal relations

substantially alters the problem. The development of human societies, it

may be argued, derives a completely new character from the dominance

of the conscious psychical element, creating as it does new conditions

(inventions, social institutions, etc.) which limit and counteract the

operation of natural selection, and control and modify the influence of

physical environment. Most thinkers agree now that the chief clews to

the growth of civilisation must be sought in the psychological

sphere. Imitation, for instance, is a principle which is probably

more significant for the explanation of human development than natural

selection. Darwin himself was conscious that his principles had only

a very restricted application in this sphere, as is evident from his

cautious and tentative remarks in the 5th chapter of his "Descent of

Man". He applied natural selection to the growth of the intellectual

faculties and of the fundamental social instincts, and also to the

differentiation of the great races or "sub-species" (Caucasian, African,

etc.) which differ in anthropological character. (Darwinian formulae may

be suggestive by way of analogy. For instance, it is characteristic of

social advance that a multitude of inventions, schemes and plans are

framed which are never carried out, similar to, or designed for the same

end as, an invention or plan which is actually adopted because it has

chanced to suit better the particular conditions of the hour (just as

the works accomplished by an individual statesman, artist or savant are

usually only a residue of the numerous projects conceived by his brain).

This process in which so much abortive production occurs is analogous to

elimination by natural selection.)

16. But if it is admitted that the governing factors which concern

the student of social development are of the psychical order, the

preliminary success of natural science in explaining organic evolution

by general principles encouraged sociologists to hope that social

evolution could be explained on general principles also. The idea of

Condorcet, Buckle, and others, that history could be assimilated to

the natural sciences was powerfully reinforced, and the notion that the

actual historical process, and every social movement involved in it, can

be accounted for by sociological generalisations, so-called "laws," is

still entertained by many, in one form or another. Dissentients from

this view do not deny that the generalisations at which the sociologist

arrives by the comparative method, by the analysis of social factors,

and by psychological deduction may be an aid to the historian; but they

deny that such uniformities are laws or contain an explanation of the

phenomena. They can point to the element of chance coincidence. This

element must have played a part in the events of organic evolution, but

it has probably in a larger measure helped to determine events in social

evolution. The collision of two unconnected sequences may be fraught

with great results. The sudden death of a leader or a marriage without

issue, to take simple cases, has again and again led to permanent

political consequences. More emphasis is laid on the decisive actions

of individuals, which cannot be reduced under generalisations and which

deflect the course of events. If the significance of the individual will

had been exaggerated to the neglect of the collective activity of the

social aggregate before Condorcet, his doctrine tended to eliminate as

unimportant the roles of prominent men, and by means of this elimination

it was possible to found sociology. But it may be urged that it is

patent on the face of history that its course has constantly been

shaped and modified by the wills of individuals (We can ignore here the

metaphysical question of freewill and determinism. For the character of

the individual's brain depends in any case on ante-natal accidents

and coincidences, and so it may be said that the role of individuals

ultimately depends on chance,--the accidental coincidence of independent

sequences.), which are by no means always the expression of the

collective will; and that the appearance of such personalities at the

given moments is not a necessary outcome of the conditions and cannot be

deduced. Nor is there any proof that, if such and such an individual

had not been born, some one else would have arisen to do what he did. In

some cases there is no reason to think that what happened need ever have

come to pass. In other cases, it seems evident that the actual change

was inevitable, but in default of the man who initiated and guided it,

it might have been postponed, and, postponed or not, might have borne

a different cachet. I may illustrate by an instance which has just come

under my notice. Modern painting was founded by Giotto, and the Italian

expedition of Charles VIII, near the close of the sixteenth century,

introduced into France the fashion of imitating Italian painters.

But for Giotto and Charles VIII, French painting might have been very

different. It may be said that "if Giotto had not appeared, some other

great initiator would have played a role analogous to his, and that

without Charles VIII there would have been the commerce with Italy,

which in the long run would have sufficed to place France in relation

with Italian artists. But the equivalent of Giotto might have been

deferred for a century and probably would have been different; and

commercial relations would have required ages to produce the rayonnement

imitatif of Italian art in France, which the expedition of the royal

adventurer provoked in a few years." (I have taken this example from G.

Tarde's "La logique sociale" 2 (page 403), Paris, 1904, where it is used

for quite a different purpose.) Instances furnished by political history

are simply endless. Can we conjecture how events would have moved if the

son of Philip of Macedon had been an incompetent? The aggressive action

of Prussia which astonished Europe in 1740 determined the subsequent

history of Germany; but that action was anything but inevitable; it

depended entirely on the personality of Frederick the Great.

Hence it may be argued that the action of individual wills is a

determining and disturbing factor, too significant and effective to

allow history to be grasped by sociological formulae. The types and

general forms of development which the sociologist attempts to disengage

can only assist the historian in understanding the actual course

of events. It is in the special domains of economic history and

Culturgeschichte which have come to the front in modern times that

generalisation is most fruitful, but even in these it may be contended

that it furnishes only partial explanations.

17. The truth is that Darwinism itself offers the best illustration of

the insufficiency of general laws to account for historical

development. The part played by coincidence, and the part played

by individuals--limited by, and related to, general social

conditions--render it impossible to deduce the course of the past

history of man or to predict the future. But it is just the same with

organic development. Darwin (or any other zoologist) could not deduce

the actual course of evolution from general principles. Given an

organism and its environment, he could not show that it must evolve into

a more complex organism of a definite pre-determined type; knowing

what it has evolved into, he could attempt to discover and assign the

determining causes. General principles do not account for a particular

sequence; they embody necessary conditions; but there is a chapter of

accidents too. It is the same in the case of history.

18. Among the evolutional attempts to subsume the course of history

under general syntheses, perhaps the most important is that of

Lamprecht, whose "kulturhistorische Methode," which he has deduced from

and applied to German history, exhibits the (indirect) influence of the

Comtist school. It is based upon psychology, which, in his view, holds

among the sciences of mind (Geisteswissenschaften) the same place (that

of a Grundwissenschaft) which mechanics holds among the sciences of

nature. History, by the same comparison, corresponds to biology, and,

according to him, it can only become scientific if it is reduced to

general concepts (Begriffe). Historical movements and events are of

a psychical character, and Lamprecht conceives a given phase of

civilisation as "a collective psychical condition (seelischer

Gesamtzustand)" controlling the period, "a diapason which penetrates

all psychical phenomena and thereby all historical events of the time."

("Die kulturhistorische Methode", Berlin, 1900, page 26.) He has worked

out a series of such phases, "ages of changing psychical diapason," in

his "Deutsche Geschichte" with the aim of showing that all the feelings

and actions of each age can be explained by the diapason; and has

attempted to prove that these diapasons are exhibited in other social

developments, and are consequently not singular but typical. He

maintains further that these ages succeed each other in a definite

order; the principle being that the collective psychical development

begins with the homogeneity of all the individual members of a society

and, through heightened psychical activity, advances in the form of a

continually increasing differentiation of the individuals (this is akin

to the Spencerian formula). This process, evolving psychical freedom

from psychical constraint, exhibits a series of psychical phenomena

which define successive periods of civilisation. The process depends on

two simple principles, that no idea can disappear without leaving behind

it an effect or influence, and that all psychical life, whether in

a person or a society, means change, the acquisition of new mental

contents. It follows that the new have to come to terms with the old,

and this leads to a synthesis which determines the character of a new

age. Hence the ages of civilisation are defined as the "highest

concepts for subsuming without exception all psychical phenomena of

the development of human societies, that is, of all historical events."

(Ibid. pages 28, 29.) Lamprecht deduces the idea of a special historical

science, which might be called "historical ethnology," dealing with the

ages of civilisation, and bearing the same relation to (descriptive or

narrative) history as ethnology to ethnography. Such a science obviously

corresponds to Comte's social dynamics, and the comparative method,

on which Comte laid so much emphasis, is the principal instrument of

Lamprecht.

19. I have dwelt on the fundamental ideas of Lamprecht, because they are

not yet widely known in England, and because his system is the ablest

product of the sociological school of historians. It carries the

more weight as its author himself is a historical specialist, and his

historical syntheses deserve the most careful consideration. But there

is much in the process of development which on such assumptions is

not explained, especially the initiative of individuals. Historical

development does not proceed in a right line, without the choice of

diverging. Again and again, several roads are open to it, of which it

chooses one--why? On Lamprecht's method, we may be able to assign the

conditions which limit the psychical activity of men at a particular

stage of evolution, but within those limits the individual has so many

options, such a wide room for moving, that the definition of those

conditions, the "psychical diapasons," is only part of the explanation

of the particular development. The heel of Achilles in all historical

speculations of this class has been the role of the individual.

The increasing prominence of economic history has tended to encourage

the view that history can be explained in terms of general concepts or

types. Marx and his school based their theory of human development on

the conditions of production, by which, according to them, all social

movements and historical changes are entirely controlled. The leading

part which economic factors play in Lamprecht's system is significant,

illustrating the fact that economic changes admit most readily this

kind of treatment, because they have been less subject to direction or

interference by individual pioneers.

Perhaps it may be thought that the conception of SOCIAL ENVIRONMENT

(essentially psychical), on which Lamprecht's "psychical diapasons"

depend, is the most valuable and fertile conception that the historian

owes to the suggestion of the science of biology--the conception of

all particular historical actions and movements as (1) related to and

conditioned by the social environment, and (2) gradually bringing about

a transformation of that environment. But no given transformation can be

proved to be necessary (pre-determined). And types of development do not

represent laws; their meaning and value lie in the help they may give

to the historian, in investigating a certain period of civilisation,

to enable him to discover the interrelations among the diverse features

which it presents. They are, as some one has said, an instrument of

heuretic method.

20. The men engaged in special historical researches--which have been

pursued unremittingly for a century past, according to scientific

methods of investigating evidence (initiated by Wolf, Niebuhr,

Ranke)--have for the most part worked on the assumptions of genetic

history or at least followed in the footsteps of those who fully grasped

the genetic point of view. But their aim has been to collect and sift

evidence, and determine particular facts; comparatively few have given

serious thought to the lines of research and the speculations which

have been considered in this paper. They have been reasonably shy

of compromising their work by applying theories which are still much

debated and immature. But historiography cannot permanently evade the

questions raised by these theories. One may venture to say that no

historical change or transformation will be fully understood until it is

explained how social environment acted on the individual components of

the society (both immediately and by heredity), and how the individuals

reacted upon their environment. The problem is psychical, but it is

analogous to the main problem of the biologist.

XXVIII. THE GENESIS OF DOUBLE STARS. By Sir George Darwin, K.C.B.,

F.R.S.

Plumian Professor of Astronomy and Experimental Philosophy in the

University of Cambridge.

In ordinary speech a system of any sort is said to be stable when it

cannot be upset easily, but the meaning attached to the word is usually

somewhat vague. It is hardly surprising that this should be the case,

when it is only within the last thirty years, and principally through

the investigations of M. Poincare, that the conception of stability has,

even for physicists, assumed a definiteness and clearness in which it

was previously lacking. The laws which govern stability hold good in

regions of the greatest diversity; they apply to the motion of planets

round the sun, to the internal arrangement of those minute corpuscles of

which each chemical atom is constructed, and to the forms of celestial

bodies. In the present essay I shall attempt to consider the laws of

stability as relating to the last case, and shall discuss the succession

of shapes which may be assumed by celestial bodies in the course of

their evolution. I believe further that homologous conceptions are

applicable in the consideration of the transmutations of the various

forms of animal and of vegetable life and in other regions of thought.

Even if some of my readers should think that what I shall say on this

head is fanciful, yet at least the exposition will serve to illustrate

the meaning to be attached to the laws of stability in the physical

universe.

I propose, therefore, to begin this essay by a sketch of the principles

of stability as they are now formulated by physicists.

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