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Darwin Correspondence Project

From W. W. Baxter   13 November 1871

Bromley Kent

Nov 13. 71


I herewith beg to send you a measure which is the best I have—20 ounces of which contain of Cubic inches 34.65925 each ounce therefore representing 1.7329625 cubic inches.1

I remain | Sir | Yrs obedly. | Wm. W. Baxter

C. Darwin Esqre

CD note:

On Comm〈on〉

114 ounces

7lb. 7oz. 14


72 ounces

3lb. 8oz

See proportion of bulk to weight as test


The measure was probably for CD’s research on the formation of vegetable mould by earthworms, which involved calculating the amount of earth brought up by worms from beneath the surface over a given time. Worm castings were collected from two separate square yards near Leith Hill Place in Surrey by CD’s niece Lucy Wedgwood between October 1870 and October 1871 (see Earthworms, pp. 167–8). See also letter from Lucy Wedgwood, 20 November [1871].


Sends CD a measure with capacity of 20 oz or 34.65925 cubic inches.

Letter details

Letter no.
William Walmisley Baxter
Charles Robert Darwin
Sent from
Source of text
DAR 160: 98
Physical description
1p †

Please cite as

Darwin Correspondence Project, “Letter no. 8065,” accessed on 23 April 2019,

Also published in The Correspondence of Charles Darwin, vol. 19