I am particularly obliged to you for sending me Asa Gray's letter; how very pleasantly he writes. To see his and your caution on the species-question ought to overwhelm me in confusion and shame; it does make me feel deuced uncomfortable...It is delightful to hear all that he says on Agassiz: how very singular it is that so EMINENTLY clever a man, with such IMMENSE knowledge on many branches of Natural History, should write as he does. Lyell told me that he was so delighted with one of his (Agassiz) lectures on progressive development, etc., etc., that he went to him afterwards and told him, "that it was so delightful, that he could not help all the time wishing it was true." I seldom see a Zoological paper from North America, without observing the impress of Agassiz's doctrines--another proof, by the way, of how great a man he is. I was pleased and surprised to see A. Gray's remarks on crossing, obliterating varieties, on which, as you know, I have been collecting facts for these dozen years. How awfully flat I shall feel, if when I get my notes together on species, etc., etc., the whole thing explodes like an empty puff-ball. Do not work yourself to death.
Ever yours most truly, C. DARWIN.
CHARLES DARWIN TO J.D. HOOKER. Down, November 5th [1854].
My dear Hooker,
I was delighted to get your note yesterday. I congratulate you very heartily (On the award to him of the Royal Society's Medal.), and whether you care much or little, I rejoice to see the highest scientific judgment- court in Great Britain recognise your claims. I do hope Mrs. Hooker is pleased, and E. desires me particularly to send her cordial congratulations ...I pity you from the very bottom of my heart about your after-dinner speech, which I fear I shall not hear. Without you have a very much greater soul than I have (and I believe that you have), you will find the medal a pleasant little stimulus, when work goes badly, and one ruminates that all is vanity, it is pleasant to have some tangible proof, that others have thought something of one's labours.
Good-bye my dear Hooker, I can assure [you] that we both most truly enjoyed your and Mrs. Hooker's visit here. Farewell.
My dear Hooker, your sincere friend, C. DARWIN.
CHARLES DARWIN TO J.D. HOOKER. March 7 [1855].
...I have just finished working well at Wollaston's (Thomas Vernon Wollaston died (in his fifty-seventh year, as I believe) on January 4, 1878. His health forcing him in early manhood to winter in the south, he devoted himself to a study of the Coleoptera of Madeira, the Cape de Verdes, and St. Helena, whence he deduced evidence in support of the belief in the submerged continent of 'Atlantis.' In an obituary notice by Mr. Rye ('Nature,' 1878) he is described as working persistently "upon a broad conception of the science to which he was devoted," while being at the same time "accurate, elaborate, and precise ad punctum, and naturally of a minutely critical habit." His first scientific paper was written when he was an undergraduate at Jesus College, Cambridge. While at the University, he was an Associate and afterwards a Member of the Ray Club: this is a small society which still meets once a week, and where the undergraduate members, or Associates, receive much kindly encouragement from their elders.) 'Insecta Maderensia': it is an ADMIRABLE work. There is a very curious point in the astounding proportion of Coleoptera that are apterous; and I think I have guessed the reason, viz., that powers of flight would be injurious to insects inhabiting a confined locality, and expose them to be blown to the sea: to test this, I find that the insects inhabiting the Dezerte Grande, a quite small islet, would be still more exposed to this danger, and here the proportion of apterous insects is even considerably greater than on Madeira Proper. Wollaston speaks of Madeira and the other Archipelagoes as being "sure and certain witnesses of Forbes' old continent," and of course the Entomological world implicitly follows this view.