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Darwin Correspondence Project

To W. E. Darwin   4 [November 1862]1

Down

4th

My dear William

There were only 5 seeds in packet sent; these were all perfectly good—2

But do not bother yourself & count anymore; from long practice I can do it very quickly: I have counted about 30 pods of wild—20 of home-grown; besides my artificially fertilised pods.3 So I have had lots of counting! Next year I shall make 136 more crosses, so I shall have counting with a vengeance next year.—4

Good Bye | My dear old man | C. D

Footnotes

The date is established by the relationship to the letter from W. E. Darwin, 21 October [1862], and to the letter to W. E. Darwin, 30 [October 1862], and by reference to dated notes by CD and William, recording the numbers of seeds counted in the pods of Lythrum salicaria (see nn. 2 and 3, below).
CD had asked William to count the seeds from six pods of each of the three forms of Lythrum salicaria, collected from plants growing wild near Southampton (see letter from W. E. Darwin, 21 October [1862], and letter to W. E. Darwin, 30 [October 1862]). On 2 November 1862, William recorded in his Botanical notebook (DAR 117: 50) that he had counted the seeds in one pod of the long-styled form, excluding ‘those evidently void or those shrivelled on the convex side’.
In October 1862, William had sent his father pods of each of the three forms of Lythrum salicaria, collected from plants growing wild near Southampton (see letter from W. E. Darwin, 21 October [1862] and nn. 2 and 3). CD’s tally of the seeds from thirty-one of these pods is in DAR 27.2 (ser. 2): 45, 55–6; some of these notes are dated 8 and 13 October. In addition, his tally of the seeds from twenty-one pods collected from plants grown in his garden and pollinated by insects, is in DAR 27.2 (ser. 2): 53, dated 17 October 1862. CD’s results from the crosses made with this species in 1862 are also recorded in DAR 27.2 (ser. 2).

Summary

Discusses a crossing experiment.

Has been counting the seeds in pods [of Lythrum?].

Letter details

Letter no.
DCP-LETT-3682
From
Charles Robert Darwin
To
William Erasmus Darwin
Sent from
Down
Source of text
DAR 210.6: 105
Physical description
2pp

Please cite as

Darwin Correspondence Project, “Letter no. 3682,” accessed on 23 September 2019, https://www.darwinproject.ac.uk/letter/DCP-LETT-3682.xml

Also published in The Correspondence of Charles Darwin, vol. 10

letter