skip to content

Darwin Correspondence Project

From J. S. Burdon Sanderson   26 May [1874]1

49, Queen Anne Street. | W.

May 26

Dear Mr Darwin

I have just been reading over your last letter (of May 14)2 and find that there are several questions still to answer and that I have very carelessly neglected one or two matters that ought to have been immediately attended to. I have no excuse to make that is worth setting forward & therefore shall not attempt any.

I may mention provisionally that artificial gastric juice dissolves bone entirely and that gluten & fibrin are completely dissolved both in Hydrochloric acid and in the propionic & butyric acids at ordinary temperatures.3

I have noted down all the matters to be attended to & I think I may say positively that all will be completed in a couple of days

Very truly yours | J B Sanderson

CD annotations

1.1 I have … any. 1.4] crossed pencil
Top of letter: ‘at suggestion of Dr B. Sanderson Hydrochloric Acid’ blue crayon; ‘(Gluten) & [‘Fibrin’ del] | (2)’ red crayon


The year is established by the relationship between this letter and the letter to J. S. Burdon Sanderson, 14 May 1874.
The experiments with artificial gastric juice are described in Insectivorous plants, pp. 104–8 and 131.


Insectivorous plants. By Charles Darwin. London: John Murray. 1875.


Sends CD provisional information that artificial gastric juice dissolves bone entirely and that gluten and fibrin are completely dissolved in hydrochloric, propionic, and butyric acids. [See Insectivorous plants, pp. 118–19.]

Letter details

Letter no.
John Scott Burdon Sanderson, baronet
Charles Robert Darwin
Sent from
London, Queen Anne St, 49
Source of text
DAR 58.1: 54–5
Physical description
3pp †

Please cite as

Darwin Correspondence Project, “Letter no. 9470,” accessed on 17 September 2021,

Also published in The Correspondence of Charles Darwin, vol. 22