[134] After Mr. Strickland's name comes the following sentence, which has been erased, but remains legible: "Professor Owen would be very good; but I presume he would not undertake such a work."
[135] The words "several years ago and," seem to have been added at a later date.
CHAPTER X. THE GROWTH OF THE 'ORIGIN OF SPECIES.'
1843-1858.
The history of the years 1843-1858 is here related in an extremely abbreviated fashion. It was a period of minute labour on a variety of subjects, and the letters accordingly abound in detail. They are in many ways extremely interesting, more especially so to professed naturalists, and the picture of patient research which they convey is of great value from a biographical point of view. But such a picture must either be given in a complete series of unabridged letters, or omitted altogether. The limits of space compel me to the latter choice. The reader must imagine my father corresponding on problems in geology, geographical distribution, and classification; at the same time collecting facts on such varied points as the stripes on horses' legs, the floating of seeds, the breeding of pigeons, the form of bees' cells and the innumerable other questions to which his gigantic task demanded answers.
The concluding letter of the last chapter has shown how strong was his conviction of the value of his work. It is impressive evidence of the condition of the scientific atmosphere, to discover, as in the following letters to Sir Joseph Hooker, how small was the amount of encouragement that he dared to hope for from his brother-naturalists.
[January 11th, 1844.]
... I have been now ever since my return engaged in a very presumptuous work, and I know no one individual who would not say a very foolish one. I was so struck with the distribution of the Galapagos organisms, &c. &c., and with the character of the American fossil mammifers, &c. &c., that I determined to collect blindly every sort of fact, which could bear any way on what are species. I have read heaps of agricultural and horticultural books, and have never ceased collecting facts. At last gleams of light have come, and I am almost convinced (quite contrary to the opinion I started with) that species are not (it is like confessing a murder) immutable. Heaven forfend me from Lamarck nonsense of a "tendency to progression," "adaptations from the slow willing of animals," &c.! But the conclusions I am led to are not widely different from his; though the means of change are wholly so. I think I have found out (here's presumption!) the simple way by which species become exquisitely adapted to various ends. You will now groan, and think to yourself, "on what a man have I been wasting my time and writing to." I should, five years ago, have thought so....
And again (1844):—