From Robert Elliot to George Cupples   25 June 1869

Laighwood, Dunkeld

25th June 1869

Dear Sir

I am in receipt of yours of the 23rd. Inst. to get the exact number of Lambs born on large Hill farms is impossible, the numbers can only be taken at the time of Castration.— I have kept no record of the numbers, but as I mentioned to you previously, I have obtained the exact numbers annually, and have found as near as possible that they are equal on the average, that is equal for all practical purposes, I cannot speak to one or two per cent.1 I know no one likely to have kept a record of the numbers at Castration time, the numbers are taken accurately at Weaning time & some may have retained a record I have not.— I am only told the numbers for what number of females I keep and keep all the males.—

This year I have 11 Female Calfs and 4 males, last year I had a few more males than females. I may mention that our ratcatcher says that there are 5 male rats for each female, and that he has found that to be the case in all rat nests he has found with young ones in them, thinking this extraordinary I have examined all old ones killed, some hundreds, since he said so, and have found that they were chiefly males.—2

I am | Dear Sir | Yours truly | Robert Elliot

George Cupples Esq

The Cottage | Guard Bridge | Fifeshire

CD annotations

1.1 I am … males.— 1.9] crossed blue crayon
2.1 This … males,] scored blue crayon
Top of page: ‘Male Rats’ pencil; ‘& Cattle’ blue crayon
CD cited Elliot for the information on proportions of the sexes in rats in Descent 1: 305.

Please cite as “DCP-LETT-6805,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-6805