To B. J. Sulivan 13 March 1
Down. | Beckenham | Kent. S.E.
My dear Sulivan
I write a line to thank you for your extremely interesting letter. I had heard vague stories to the same effect about parrots & language; but never before anything definite. I now quite believe the fact, & a very wonderful it is.2 It is, however, only carrying a good deal further the varied barks of a dog.
Again I thank you for all the trouble which you have taken & for your very interesting letter.—
We heard from my daughter today. She was very sorry to have missed you.— She is a good deal of an invalid, & being never strong cannot get over her attack of the measles.—3
I have many letters to write so no more.— My last book half killed me with fatigue.—4
Yours ever very truly | Ch. Darwin
Thanks BJS for his interesting letter about parrots and language.