Dear Sir

May I beg you to refer to the following portions of your last published work: (Animals Under dom^t)¹

At p 49— you speak of “6 or 7 other living species of the genus Equus.”

At p 60 of “the other 7 or 8 other species of the genus.”

At p 61. “because all species of the genus Equus”

At p 55 you explain analogous variation: “a variation occurring in a species or variety which resembles a normal character in another distinct species or variety”. At p 64 you illustrate “analogous variations”, (certain peculiarities are) “all cases of analogous variation in the horse or ass.” And finally: at pps 62— & 64 you speak of “Asinus tæniopus: A. Burchellii, & quagga.—²

Probably some of your readers may, like myself, not be able to understand

l^o. Whether you consider there are 7-8-9 species of Equus—

2^o. Whether you regard Equus & Asinus as distinct genera or distinct species of the genus Equus— & I cannot help thinking the comparison of the foregoing extracts & the mode in which you divide the subject & some other remarks made by you, will be sufficient to confuse them.— As you know I do not ask out of mere curiosity or to find fault— perhaps you will kindly clear the matter up for me.

Yours very truly | James Samuelson

Chas Darwin E^sqr MA FRS.