"I am delighted that I may say (with absolute truth) that my essay is published at your suggestion, but I hope it will not need so much apology as I at first thought; for I have resolved to make it nearly as complete as my present materials allow. I cannot put in all which you suggest, for it would appear too conceited."
FROM A LETTER TO W.D. FOX. Down, June 14th [1856].
"...What you say about my Essay, I dare say is very true; and it gave me another fit of the wibber-gibbers: I hope that I shall succeed in making it modest. One great motive is to get information on the many points on which I want it. But I tremble about it, which I should not do, if I allowed some three or four more years to elapse before publishing anything..."
[The following extracts from letters to Mr. Fox are worth giving, as showing how great was the accumulation of material which now had to be dealt with.
June 14th [1856].
"Very many thanks for the capital information on cats; I see I had blundered greatly, but I know I had somewhere your original notes; but my notes are so numerous during nineteen years' collection, that it would take me at least a year to go over and classify them."
November 1856.
"Sometimes I fear I shall break down, for my subject gets bigger and bigger with each month's work."]
CHARLES DARWIN TO C. LYELL Down, 16th [June, 1856].
My dear Lyell,