My dear Sir

I am most sincerely grieved to hear of your illness & earnestly hope that you will soon be completely recovered. I will now answer your question as well as I can.²

There can be no doubt that “animal matter” l 3 p 106 ought to be earthy matter.

A “minim” is the unit in our Apothecaries’ Measure of Fluids which is as follows

Our clumsy nomenclature in which the same words drachm and ounce are used for weight or fluid measure, is very puzzling— You will see therefore that in yr example p 124, “2 dr” is fluid measure, the equivalent in the metric system being given in brackets, as in the case of grains and grammes. Using “ml” instead of the universally employed “cc” was an unfortunate mistake which was not detected till it was too late to rectify it.

The note on p 111 should be Schiff ‘Lęcons &c’ T ii p 249³  I am exceedingly sorry that these errata should have given you the trouble they must have done & am very much obliged to you for calling my attention to them

I give the following errata, which may possibly have escaped your eye—

p 127 l 12 from bottom

for “lepidum” read “lepidium”

p 344 l 7 from bottom

for “pour fourth” read “pour forth”—(merely false spelling)

My dear Sir | Yours very sincerely. | C. Darwin

Insectivorous Plants have sold well in England.—

You do not say what you think of my suggestion to employ some one to translate “Climbing Plants,” under your superintendence. Ch. Martins is doing this in France.⁴