To Edward Frankland 23 September 1873
Down, | Beckenham, Kent.
Sep 23. 1873
My dear Sir
Many thanks for your renewed kindness. I have written to Dr Moore to ask him to prepare some fibrin for me & to test its purity from Hydro chloric acid & all salts. As he has been accustomed to prepare animal compounds, I shd think he might be quite trusted. I told him that you were going to test for the acid.1
I procured doubly distilled water from Messrs Hopkins & Williams.2 It is not free from particles when viewed in a strong light, & when evaporated, leaves a little residue. I put a drop on a glass plate & added a little weak nitrate of silver, & I could see no trace of a cloud, so I hope it is sufficiently pure.3
As soon as I get the fibrin I will set to work with the leaves.
Yours sincerely obliged | Ch. Darwin
Footnotes
Bibliography
Post Office London directory: Post-Office annual directory. … A list of the principal merchants, traders of eminence, &c. in the cities of London and Westminster, the borough of Southwark, and parts adjacent … general and special information relating to the Post Office. Post Office London directory. London: His Majesty’s Postmaster-General [and others]. 1802–1967.
Summary
Will follow EF’s suggestions as to securing purity of fibrin.
Letter details
- Letter no.
- DCP-LETT-9064A
- From
- Charles Robert Darwin
- To
- Edward Frankland
- Sent from
- Down
- Source of text
- The John Rylands Library, The University of Manchester
- Physical description
- LS 2pp
Please cite as
Darwin Correspondence Project, “Letter no. 9064A,” accessed on 25 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-9064A.xml
Also published in The Correspondence of Charles Darwin, vol. 21
