1 milligramme =
= 64.9 milligrammes
1386 3 4 —
Could you send a large fruit tart. I should rather like 12 napkins, I'll see that they are brought back Safe.—
- f1 4453f.f1The date is conjectured from the relationship between this letter and the letter to G. H. Darwin, [after 5 April 1864?].
- f2 4453f.f2For his work with Clematis, CD had asked George how many milligrams were in one English grain (see letter to G. H. Darwin, [after 5 April 1864?] and n. 3).
- f3 4453f.f3The note to Emma Darwin, written on the back of the calculations, could have been written by George, or by one of the Darwins' other sons, Leonard or Francis, who were also attending Clapham school.
- f4 4453f.f4In his discussion of Clematis species in `Climbing plants', p. 27 n., CD wrote: `Our English grain equals nearly 65 milligrammes.'