'I have felt all my life and I still feel, the most sincere satisfaction that Mr Darwin had been at work long before me, and that it was not left for me to attempt to write _The Origin of Species_. I have long since measured my own strength and know well that it would be quite unequal to that task. For abler men than myself may confess, that they have not that untiring patience in acc.u.mulating, and that wonderful skill in using, large ma.s.ses of facts of the most varied kind,--that wide and accurate physiological knowledge,--that acuteness in devising and skill in carrying out experiments,--and that admirable style of composition, at once clear, persuasive and judicial,--qualities which in their harmonious combination mark out Mr Darwin as the man, perhaps of all men now living, best fitted for the great work he has undertaken and accomplished[116].'

And fifty years after the joint publication of the theory of Natural Selection to the Linnean Society he said:

'_I_ was then (as often since) the "young man in a hurry," _he_'

(Darwin) 'the painstaking and patient student, seeking ever the full demonstration of the truth he had discovered, rather than to achieve immediate personal fame[117].'

And when he referred to the respective shares of Darwin and himself to the credit of having brought forward the theory of natural selection, he actually suggests as a fair proportion '_twenty years to one week_'--those being the periods each had devoted to the subject[118]!

Never surely was such a n.o.ble example of personal abnegation! We admire the generosity, though we cannot accept the estimate, for do we not know that, for at least half the period of Darwin's patient quest, Wallace had spent in deeply pondering upon the same great question?

CHAPTER X

THE ORIGIN OF SPECIES

In the preceding chapter I have endeavoured to show how the hypothesis of Natural Selection originated in the minds of its authors, and must now invite attention to the way in which it was introduced to the world.

What has been said earlier with respect to the labours and writings of Hutton, Scrope and Lyell may serve to indicate the great importance of the _manner_ of presentment of new ideas--the logical force and literary skill with which they are brought to the notice of scientific contemporaries and the world at large.

There are some striking pa.s.sages in Darwin's naive 'autobiography and letters' which indicate the beginnings of his ambition for literary distinction. It must always be borne in mind in reading this autobiography, however, that it was not intended by Darwin for publication, but only for the amus.e.m.e.nt of the members of his own family. But the charming and unsophisticated self-revelations in it will always be a source of delight to the world.

When making his first original observations among the volcanic cones and craters of St Jago in the Cape-de-Verde Islands, he says 'It then first dawned on me that I might perhaps write a book on the geology of the different countries visited, and this made me thrill with delight[119].'

He tells us concerning his regular occupations on board the _Beagle_, that 'during some part of the day, I wrote my Journal and took much pains in describing carefully and vividly all that I had seen: and this was good practice[120].'

'Later in the voyage' he says 'FitzRoy' (the Captain of the _Beagle_) 'asked me to read some of my Journal and declared it would be worth publishing, so here was a second book in prospect[121]!'

Darwin's first published writings were the extracts from his letters which Henslow read to the Philosophical Society of Cambridge, and those which Sedgwick submitted to the Geological Society. At Ascension, on the voyage home, a letter from Darwin's sisters had informed him of the commendation with which Sedgwick had spoken to his father of these papers, and he wrote fifty years afterwards: 'After reading this letter, I clambered over the mountains of Ascension with a bounding step, and made the volcanic rocks ring under my geological hammer.' When in 1839 his charming _Journal of Researches_ was published he records that 'The success of this my first literary child always tickles my vanity more than that of any of my other books[122].'

As a matter of fact, no one could possibly be more diffident and modest about his actual literary performances than was Charles Darwin. I have heard him again and again express a wish that he possessed 'dear old Lyell's literary skill'; and he often spoke with the greatest enthusiasm of the 'clearness and force of Huxley's style.' On one occasion he mentioned to me, with something like sadness in his voice, that it had been a.s.serted 'there was a want of connection and continuity in the written arguments,' and he told me that, while engaged on the _Origin_, he had seldom been able to write, without interruption from pain, for more than twenty minutes at a time!

Charles Darwin never spoke definitely to me about the nature of the sufferings that he so patiently endured. On the occasion of my first visit to him at Down he wrote me a letter (dated August 25th, 1880) in which, after giving the most minute and kindly directions concerning the journey, he arranged that his dog-cart should bring me to the house in time for a 1 o'clock lunch, telling me that to catch a certain train for return, it would be necessary to leave his house a little before 4 o'clock. But he added significantly:--

'But I am bound to tell you that I shall not be able to talk with you or anyone else for this length of time, however much I should like to do so--but you can read newspaper or take a stroll during part of the time.'

His constant practice, whenever I visited him, either at Down or at his brother's or daughter's house in London, was to retire with me, after lunch, to a room where we could 'talk geology' for about three quarters of an hour. At the end of that time, Mrs Darwin would come in smilingly, and though no word was spoken by her, Darwin would at once rise and beg me to read the newspaper for a time, or, if I preferred it, to take a stroll in the garden; and after urging me to stay 'if I could possibly spare the time,' would go away, as I understood to lie down. On his return, about half an hour later, the discussion would be resumed where it had been left off, without further remark.

Mr Francis Darwin has told us that the nature and extent of his father's sufferings--so patiently and uncomplainingly borne--were never fully known, even to his own children, but only to the faithful wife who devoted her whole life to the care of his health. As is well known, Darwin seldom visited at other houses, besides those of immediate relatives, or the hydropathic establishment at which he sought relief from his illness. But he was in the habit of sometimes, when in London, calling upon David Forbes the mineralogist (a younger brother of Edward Forbes) then living in York Street, Portman Square. The bonds of union between Charles Darwin and David Forbes were, first, that they had both travelled extensively in South America, and secondly, that both were greatly interested in methods of preserving and making available for future reference all notes and memoranda collected from various sources.

David Forbes devoted to the purpose a large room with the most elaborate system of pigeon-holes, about which he told me that Darwin was greatly excited. He also mentioned to me that, on one or more occasions, while Darwin was in his house, pains of such a violent character had seized him that he had been compelled to lie down for a time and had occasioned his host the greatest alarm.

It must always therefore be remembered, in reading Darwin's works, what were the sad conditions under which they were produced. It seems to be doubtful to what extent his ill-health may be regarded as the result of an almost fatal malady, from which he suffered in South America, or as the effect of the constant and prolonged sea-sickness of which he was the victim during the five years' voyage. But certain it is that his work was carried on under no ordinary difficulties, and that it was only by the exercise of the sternest resolution, in devoting every moment of time that he was free from pain to his tasks, that he was able to accomplish his great undertakings.

I do not think, however, that any unprejudiced reader will regard Darwin's literary work as standing in need of anything like an apology.

He always aims--and I think succeeds--at conveying his meaning in simple and direct language; and in all his works there is manifest that undercurrent of quiet enthusiasm, which was so strikingly displayed in his conversation. It was delightful to witness the keen enjoyment with which he heard of any new fact or observation bearing on the pursuits in which he was engaged, and his generous nature always led him to attach an exaggerated value to any discovery or suggestion which might be brought to his knowledge--and to appraise the work of others above his own.

The most striking proof of the excellence and value of Darwin's literary work is the fact that his numerous books have attained a circulation, in their original form, probably surpa.s.sing that of any other scientific writings ever produced--and that, in translations, they have appealed to a wider circle of readers than any previous naturalist has ever addressed!

We have seen that the idea of Natural Selection 'flashed on' Darwin's mind in October 1838, and although he was himself inclined to think that his _complete_ satisfaction with it, as a solution of the problem of the origin of species, was delayed to a considerably later date, yet I believe that this was only the result of his over-cautious temperament, and we must accept the date named as being that of the real birth of the hypothesis.

At this early date, too, it is evident that Darwin conceived the idea that he might accomplish for the principle of evolution in the organic world, what Lyell had done, in the _Principles_, for the inorganic world. To cite his own words, 'after my return to England it appeared to me that by following the example of Lyell in Geology, and by collecting all facts which bore in any way on the variation of animals and plants under domestication and nature, some light might perhaps be thrown on the whole subject[123].' 'In June 1842,' he says, 'I first _allowed_ myself' (how significant is the phrase!) 'the satisfaction of writing a brief abstract of my theory in pencil in 35 pages[124].'

For many years it was thought that this first sketch of Darwin's great work had been lost. But after the death of Mrs Darwin in 1896, when the house at Down was vacated, the interesting MS. was found 'hidden in a cupboard under the stairs which was not used for papers of any value but rather as an overflow of matters he did not wish to destroy[125].' By the pious care of his son, this interesting MS.--hurriedly written and sometimes almost illegible--has been given to the world, and it proves how completely Darwin had, at that early date, thought out the main lines of his future _opus magnum_.

Darwin, however, had no idea of publishing his theory to the world until he was able to support it by a great ma.s.s of facts and observations.

Lyell, again and again, warned him of the danger which he incurred of being forestalled by other workers; while his brother Erasmus constantly said to him, 'You will find that some one will have been before you[126]!'

The utmost that Darwin could be persuaded to do, however, was to enlarge his sketch of 1842 into one of 230 pages. This he did in the summer of 1844. His manner of procedure seems to have been that, keeping to the same general arrangement of the matter as he had adopted in his original sketch, he elaborated the arguments and added ill.u.s.trations. Each of the 35 pages of the pencilled sketch, as it was dealt with, had a vertical line drawn across it and was thrown aside. While the 'pencilled sketch'

of 1842 was little better than a collection of memoranda, which, though intelligible to the writer at the time, are sometimes difficult either to decipher or to understand the meaning of, the expanded work of 1844 was a much more connected and readable doc.u.ment, which Darwin caused to be carefully copied out. The work was done in the summer months, while he was absent from home, and unable therefore to refer to his abundant notes--Darwin speaks of it, therefore, as 'done from memory.'

The two sketches, as Mr Francis Darwin points out, were each divided into two distinct parts, though this arrangement is not adopted in the _Origin of Species_, as finally published. Charles Darwin on many occasions spoke of having adopted the _Principles of Geology_ as his model. That work as we have seen consisted of a first portion (eventually expanded from one to two volumes), in which the general principles were enunciated and ill.u.s.trated, and a second portion (forming the third volume), in which those principles were applied to deciphering the history of the globe in the past. I think that Darwin's original intention was to follow a similar plan; the first part of his work dealing with the evidences derived from the study of variation, crossing, the struggle for existence, etc., and the second to the proofs that natural selection had really operated as ill.u.s.trated by the geological record, by the facts of geographical distribution, and by many curious phenomena exhibited by plants and animals. Although this plan was eventually abandoned--no doubt wisely--when the _Origin_ came to be written, we cannot but recognise in it another ill.u.s.tration of the great influence exercised by Lyell and his works on Darwin--an influence the latter was always so ready to acknowledge.

On the 5th July 1844, Darwin wrote a letter to his wife in which he said, 'I have just finished my sketch of my species theory. If, as I believe, my theory in time be accepted, even by one competent judge, it will be a considerable step in science.' He goes on to request his wife, 'in case of my sudden death' to devote 400 (or if found necessary 500) to securing an editor and publishing the work. As editor he says 'Lyell would be the best, if he would undertake it,' and later, 'Lyell, especially with the aid of Hooker (and if any good zoological aid), would be best of all.' He then suggests other names from which a choice might be made, but adds 'the editor must be a geologist as well as naturalist.' Fortunately for the world Mrs Darwin was never called upon to take action in accordance with the terms of this affecting doc.u.ment[127].

It must be remembered that, at this time, Darwin was hard at work on the three volumes of the _Geology of the Beagle_, and on the second and revised edition of his _Journal of Researches_. This which he considered his 'proper work' he stuck to closely, whenever his health permitted. He had hoped to complete these books in three or four years, but they actually occupied him for _ten_, owing to constant interruptions from illness. His occasional neglect of this task, and indulgence in his 'species work,' as he called it, was always spoken of at this time by Darwin as 'idleness.' And when the geological and narrative books were finished, Darwin took up the systematic study of the Barnacles (_Cirripedia_), both recent and fossil, and wrote two monumental works on the subject. These occupied eight years, two out of which he estimated were lost by interruptions from illness. So absorbed was he in this work, that his children regarded it as the _necessary occupation_ of a man,--and when a visitor in the house was seen not to be so employed one of them enquired of their mother, 'When does Mr ---- do _his_ Barnacles?' Huxley has left on record his view that in devoting so long a time to the study of the Barnacles Darwin 'never did a wiser thing,' for it brought him into direct contact with the principles on which naturalists found 'species[128].' And Hooker has expressed the same opinion.

Daring these years of labour in geology and zoology--interrupted only by the 'hours of idleness'--devoted to 'the species question,' Darwin, though leading at Down almost the life of a hermit, was nevertheless in frequent communication with two or three faithful friends who followed his labours with the deepest interest. Cautious as was Darwin himself, he found in his life-long friend Lyell, a still more doubting and critical spirit, and it is clear from what Darwin says that he derived much help by laying new ideas and suggestions before him. The year before Darwin's death he wrote of Lyell, 'When I made a remark to him on Geology, he never rested till he saw the whole case clearly, and often made me see it more clearly than I had done before.'

Lyell's father was a botanist of considerable repute, the friend of Sir William Hooker and his distinguished son Dr (now Sir Joseph) Hooker.

While Darwin was writing his _Journal of Researches_, he handed the proof-sheets to Lyell with permission to show them to his father, who was a man of great literary judgment. The elder Lyell, in turn, showed them to young Mr Hooker, who was then preparing to join Sir James Ross, in his celebrated Antarctic voyage with H.M. ships _Erebus_ and _Terror_. Hooker was then working hard to take his doctor's degree before joining the expedition as surgeon, but he kept Darwin's proof-sheets under his pillow, so as to get opportunities of reading them 'between waking and rising.' Before leaving England, however, Hooker in 1839 casually met and was introduced to Darwin, and thus commenced a friendship which resulted in such inestimable benefits to science. Before sailing with the Antarctic expedition the young surgeon received from Charles Lyell, as a parting gift, 'a copy of Darwin's _Journal_ complete'; and he tells us that the perusal stimulated in him 'an enthusiasm in the desire to travel and observe[129].'

On Hooker's return from the voyage in 1843, a friendly letter from Darwin commenced that remarkable correspondence, which will always afford the best means of judging of the development of ideas in Darwin's mind. Hooker's wide knowledge of plants--especially of all questions concerning their distribution--was of invaluable a.s.sistance to Darwin, at a time when his attention was more particularly absorbed by geology and zoology, while botany had not as yet received much attention from him. Hooker's experience, gained in travel, his sound judgment and balanced mind made him a judicious adviser, while his caution and candour fitted him to become a trenchant critic of new suggestions, scarcely inferior in that respect to Lyell.

Darwin does not appear to have made the acquaintance of Huxley till a considerably later date; but we find the great comparative anatomist had in 1851 already become so deeply impressed by Darwin, that he said in writing to a friend he 'might be anything if he had good health[130].'

Huxley used to visit Darwin at Down occasionally, and I have often heard the latter speak of the instruction and pleasure he enjoyed from their intercourse.

For many years of his life, Darwin used to come to London and stay with his brother or daughter for about a week at a time, and on these occasions--which usually occurred about twice in the year I believe--he would meet Lyell to 'talk Geology,' Hooker for discussions on Botany, and Huxley for Zoology.

For twenty years Darwin had 'collected facts on a wholesale scale, more especially with respect to domesticated productions, by printed enquiries, by conversations with skilful breeders and gardeners, and by extensive reading.' 'When,' he added, 'I see the list of books of all kinds which I read and abstracted, including whole series of Journals and Transactions, I am surprised at my industry[131].' In September 1854 the Barnacle work was finished and 10,000 specimens sent out of the house and distributed, and then he devoted himself to arranging his 'huge pile of notes, to observing and experimenting in relation to the trans.m.u.tation of species.'

It was early in 1856 when this work had been completed, that, again urged by Lyell, he actually commenced writing his book. It was planned as a work on a considerable scale and, if finished, would have reached dimensions three or four times as great as did eventually the _Origin of Species_. Working steadily and continuously he had got as far as Chapter X, completing more than one half the book, when as he says Wallace's letter and essay came 'like a bolt from the blue.'

Oppressed by illness, anxiety and perplexity, as we have seen that Darwin was at the time, he fortunately consented to leave matters--though with great reluctance--in the hands of his friends Lyell and Hooker. They took the wise course of reading Wallace's paper at the Linnean Society on July 1st, 1858, at the same time giving extracts from Darwin's memoir written in 1844, and the abstract of a letter written by Darwin in 1857 to the distinguished American botanist, Asa Gray. This solution of the difficulty happily met with the complete approval of Wallace; and, as the result of the episode, Darwin came to the conclusion that it would not be wise to defer full publication of his views, until the extensive work on which he was engaged could be finished, but an 'abstract' of them must be prepared and issued with as little delay as possible.

For a time there was hesitation, as Darwin's correspondence with Lyell and Hooker shows, between the two plans of sending this 'abstract' to the Linnean Society in a series of papers or of making it an independent book. But Darwin entertained an invincible dislike to submitting his various conclusions to the judgment of the Council of a Society, and, in the end, the preparation of the 'Abstract' in the form of a book of moderate size, was decided on. This was the origin of Darwin's great work.

The sickness at Down had led to the abandonment of the house for a time, and, three weeks after the reading of the joint paper at the Linnean Society, we find Darwin temporarily established at Sandown, in the Isle of Wight, where the writing of the _Origin of Species_ was commenced.

The work was resumed in September when the family returned to Down, and from that time was pressed forward with the greatest diligence.

For the first half of the book, the task before Darwin was to condense, into less than one half their dimensions, the chapters he had already written for the large work as originally projected. But for the second half of the book, he had to expand directly from the essay of 1844.

So closely did Darwin apply himself to the work, that, by the end of March 28th, 1859, he was able to write to Lyell telling him that he hoped to be ready to go to press early in May, and asking advice about publication: he says, 'My Abstract will be about five hundred pages of the size of your first edition of the _Elements of Geology_.' Lyell introduced Darwin to John Murray, who had issued all his own works, and the present representative of that publishing firm has placed on record a very interesting account of the ever thoughtful and considerate relations between Darwin and his publishers, which were maintained to the end[132].

The MS. of the book seems to have been practically finished early in May, and Darwin's health then broke down for a time, so completely that he had to retire to a hydropathic establishment. By June 21st he was able to write to Lyell 'I am working very hard, but get on slowly, for I find that my corrections are terrifically heavy, and the work most difficult to me. I have corrected 130 pages, and the volume will be about 500. I have tried my best to make it clear and striking, but very much fear that I have failed; so many discussions are and must be very perplexing. _I have done my best._ If you had all my materials, I am sure you would have made a splendid book. I long to finish, for I am certainly worn out[133].' On September 10th the last proof was corrected and the preparation of the index commenced. At the meeting of the British a.s.sociation in Aberdeen, Lyell made the important announcement of the approaching publication of the great work. On November 24th the book was issued, 1250 copies having been printed, and Darwin wrote to Murray, 'I am infinitely pleased and proud at the appearance of my child.' The edition was sold out in a day, and was followed early in the next year by the issue of 3000 copies; and untold thousands have since appeared.

The writing of such a work as the _Origin of Species_, in so short a time--especially taking into consideration the condition of its author's health--was a most remarkable feat. It would, of course, not have been possible but for the fact that Darwin's mind was completely saturated with the subject, and that he had command of such an enormous body of methodically arranged notes. He showed the greatest anxiety to convince his scientific contemporaries, and at the same time to make his meaning clear to the general reader. With the former object, both MS. and printed proofs were submitted to the criticism of Lyell and Hooker; and the latter end was obtained by sending the MS. to a lady friend, Miss G.

Tollet--she, as Darwin says 'being an excellent judge of style, is going to look out errors for me.' Finally the proofs of the book were carefully read by Mrs Darwin herself.

The splendid success achieved by the work is a matter of history. Its clearness of statement and candour in reasoning pleased the general public; critics without any profound knowledge of natural history were beguiled into the opinion that they _understood_ the whole matter! and, according to their varying tastes, indulged in shallow objection or slightly offensive patronage. The fully-antic.i.p.ated, theological vituperation was of course not lacking, but most of the 'replies' to Darwin's arguments were 'lifted' from the book itself, in which objections to his views were honestly stated and candidly considered by the author.