From William Jenner   21 November 1864

8 Harley St. W

Novr. 21st. 1864

My dear Sir

I have had the urine analysed. You had better omit the alkaline powders for a little while. Especially the magnesia, must be avoided.1

Continue the phosphate of Iron & phosphoric acid.2 After a fortnight let me know how you are & also let me have some more urine—

Yours very truly | Wm. Jenner

1
In his letter of 9 November 1864, Jenner had asked whether CD’s urine was alkaline when passed, and had advised him to stop taking potash if it was. Magnesia was among the other alkalis that Jenner had prescribed for CD in March (see letter to J. D. Hooker, 13 April [1864] and n. 6).

Please cite as “DCP-LETT-4677,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-4677