"I was too anxious to seize upon the opportunity thus offered of giving the book a fair chance with the multitudinous readers of the _Times_ to make any difficulty about conditions; and being then very full of the subject, I wrote the article faster, I think, than I ever wrote anything in my life, and sent it to Mr. Lucas, who duly prefixed his opening sentences.
"When the article appeared, there was much speculation as to its authorship. The secret leaked out in time, as all secrets will, but not by my aid; and then I used to derive a good deal of innocent amusement from the vehement assertions of some of my more acute friends, that they knew it was mine from the first paragraph!
"As the _Times_ some years since referred to my connection with the review, I suppose there will be no breach of confidence in the publication of this little history, if you think it worth the space it will occupy."
[163] In his next letter to Lyell my father writes: "The omission of 'living' before 'eminent' naturalists was a dreadful blunder." In the first edition, as published, the blunder is corrected by the addition of the word "living."
[164] Darwin wrote to Asa Gray in 1860:--"The eye to this day gives me a cold shudder, but when I think of the fine known gradations, my reason tells me I ought to conquer the cold shudder."
[165] Jean Louis Rodolphe Agassiz, born at Mortier, on the lake of Morat in Switzerland, on May 28th, 1807. He emigrated to America in 1846, where he spent the rest of his life, and died Dec. 14th, 1873. His _Life_, written by his widow, was published in 1885. The following extract from a letter to Agassiz (1850) is worth giving, as showing how my father regarded him, and it may be added that his cordial feeling towards the great American naturalist remained strong to the end of his life:--
"I have seldom been more deeply gratified than by receiving your most kind present of _Lake Superior_. I had heard of it, and had much wished to read it, but I confess that it was the very great honour of having in my possession a work with your autograph as a presentation copy, that has given me such lively and sincere pleasure. I cordially thank you for it. I have begun to read it with uncommon interest, which I see will increase as I go on."