My dear Sir
As you may be anxious about the book I write to say that I have received it, the M.S. & your note.2 I thank you warmly for the trouble which you have taken.
I will soon read the M.S. & as you do not object, will perhaps keep the book till Christmas, as my second son3 who is a mathematician & who was extremely interested by your last papers, & who wished to read the others, will then be at home.
Pray believe me | yours truly obliged | Ch. Darwin
Please cite as “DCP-LETT-6491,” in Ɛpsilon: The Charles Darwin Collection accessed on