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Darwin Correspondence Project

To J. D. Hooker   6 November [1873]


I would suggest to remove by pipe about 12 fluid from a pitcher, & then add 2 or 3 drops of infusion of raw meat. After 24o test for acid.— remove by sucking pipe all fluid,— sacrifice the pitcher & compare the glands of very same pitcher (for aggregation) which had & had not received any of the infusion.—1

C. Darwin

Nov. 6th


This letter was published in Correspondence vol. 21 from a copy at CUL; the original was later found at the Royal Botanic Gardens, Kew. Hooker was experimenting on the digestive powers of the tropical pitcher-plant, Nepenthes (see Correspondence vol. 21, letter to J. D. Hooker, 3 November [1873]).


Suggests experiment and observations to carry out on pitcher [of Nepenthes].

Letter details

Letter no.
Charles Robert Darwin
Joseph Dalton Hooker
Sent from
Source of text
Royal Botanic Garden Kew (JDH/3/6 Insectivorous plants 1873–8 f.5)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 9134,” accessed on 15 June 2019,

Also published in The Correspondence of Charles Darwin, vol. 21