Dear Sir

I thank you cordially for your kind letter & offer to send me the Calliandra; but I am much engaged on another subject, & have very little strength to spare, & therefore I cannot at present take up a new subject.—¹ I looked, however, casually at the leaves & could see no signs of the absorption of animal matter, & therefore believe that the insects are caught only accidentally.—² I am sorry to say my advice or opinion w^d be of no service about the grafting, as I have had no experience.

I sh^d. very much like to pay you a visit but want of strength will prevent me.—

Again thanking you for your kindness, I remain | Dear Sir | Yours faithfully | Ch. Darwin