Encloses information on sex ratios in thoroughbred horses.
My dear Sir
I write a hurried line and send you the first instalment relating the Thoroughbred horses.
If you will return the Coursing Calendar I will extract from it. The other years of greyhounds must be made up out of the papers as no return has been compiled
In extreme haste | Truly Yours | W B Tegetmeier
C Darwin Esq.
- f1 5882.f1The date range is established by the relationship between this letter and the letters to W. B. Tegetmeier, 15 February  and 21 February .
- f2 5882.f2The enclosure has not been found. Tegetmeier may have sent CD the information on thoroughbred horses that he published in the Field, 22 February 1868, p. 144, together with a request on CD's behalf for facts on the proportion of the sexes in horses and other domesticated animals. Tegetmeier's notice on horses was as follows: `By referring to the Racing Calendar for the last two-and-twenty years (since 1846 inclusive), I have ascertained the proportion of thoroughbred colts and fillies foaled during that period; they amount to 12,763 colts and 12,797 fillies&lldots; I believe the general impression abroad is that the fillies are considerably in excess of the colts.' See letter from W. B. Tegetmeier, [before 15 February 1868].
- f3 5882.f3See letter to W. B. Tegetmeier, 15 February .