42. Rutland Gate | London S.W.
Dec 9. 1859.
My dear Darwin
Pray let me add a word of congratulation on the completion of your wonderful volume,—to those which I am sure you will have received from every side. I have laid it down in the full enjoyment of a feeling that one rarely experiences after boyish days, of having been initiated into an entirely new province of knowledge which, nevertheless, connects itself with other things in a thousand ways.
I hear you are engaged in a second Edition. There is a trivial error in p. 68. about Rhinoceroses, which I thought I might as well point out. & have taken advantage of the same opportunity to scrawl down a dozen other notes, which may, or may not, be worthless to you1
With our united kind regards to yourself & Mrs. Darwin | Believe me very sincerely yours | Francis Galton
68. (Rhinoceros.— “none are destroyed by beasts of prey”)
The wild dogs hunt the young ones very much & exhaust them to death— They pursue them all day long tearing at their ears which is the only part their teeth can fasten on. It is rare to find a Rhinoceros whose ears are not more or less mutilated,—& bear witness to the perils of their youth.
I never saw the young ones actually hunted but it was a common subject of assertion, that it was so, & I fully believe it. When one of these tough skinned beasts is dead, the jackals &c &c wait patiently till he corrupts enough for them to bite into him.2
74. (Indirect effects—) Mr. Young of Invershin3 told me years ago that he did not approve wholly of killing otters in order to preserve salmon. Otters killed a few salmon but they killed many trout & the Salmon fry had no greater enemy than trout. Therefore he actually preserved the otters in more than one instance with a view to the advantage of the Salmon.4
Please cite as “DCP-LETT-2573,” in Ɛpsilon: The Charles Darwin Collection accessed on