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More Letters of Charles Darwin — Volume 1 by Charles Darwin
page 300 of 655 (45%)
cases out of ten objectionable), where you could state, as fully as your
materials permit, all the facts about similar varieties pairing,--at a
guess how many you caught, and how many now in your collection? I look at
this fact as very important; if not in your book, put it somewhere else, or
let me have cases.

I entirely agree with you on the enormous advantage of thoroughly studying
one group.

I really have no criticism to make. (148/2. Mr. Bates' paper on mimetic
butterflies was read before the Linnean Society, November 21st, 1861, and
published in the "Linn. Soc. Trans." XXIII., 1862, page 495, under the
title of "Contributions to an Insect Fauna of the Amazon Valley.") Style
seems to me very good and clear; but I much regret that in the title or
opening passage you did not blow a loud trumpet about what you were going
to show. Perhaps the paper would have been better more divided into
sections with headings. Perhaps you might have given somewhere rather more
of a summary on the progress of segregation of varieties, and not referred
your readers to the descriptive part, excepting such readers as wanted
minute detail. But these are trifles: I consider your paper as a most
admirable production in every way. Whenever I come to variation under
natural conditions (my head for months has been exclusively occupied with
domestic varieties), I shall have to study and re-study your paper, and no
doubt shall then have to plague you with questions. I am heartily glad to
hear that you are well. I have been compelled to write in a hurry; so
excuse me.


LETTER 149. TO T.H. HUXLEY.
Down, December 7th [1862].
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