Dear & Honoured Sir.

I thank you for your kind letter. I daresay your kind present may have arrived & may be at my brother’s house— I will send & enquire if I do not go to London in a few days—   I feel that I am trespassing on your kindness, but shall be truly obliged for your “Morphological Studies”² I will read the passage which you point out; but I am a very poor German Scholar, & to my grief—I do not improve, having a very bad head for languages. I possess your Geschichte der Natur & very useful it will be for my larger work.—³ I have often been astonished at the amount of knowledge which it displays    I am very much pleased & surprised at the extraordinary quickness with which the translation has been made!⁴ It is very good news that p. 126 has not been printed off. I send the desired explanations which I hope will be clear—⁵

Your remarks shew me how clearly you understand my book, I shall ever lie under deep obligation to you, & remain Dear Sir. Yours sincerely—obliged— | C. Darwin.