etc.
On the other hand, Haeckel has recently well shown that the transparency
and absence of colour in the lower oceanic animals, belonging to the
most different classes, may be well accounted for on the principle of
protection.
Some time or other I should like much to know where your paper on the
nests of birds has appeared, and I shall be extremely anxious to read
your paper in the _Westminster Review_.
Your paper on the sexual colouring of birds will, I have no doubt, be
very striking.
Forgive me, if you can, for a touch of illiberality about your paper,
and believe me yours very sincerely,
CH. DARWIN.
* * * * *
_Down, Bromley, Kent, S.E. July 6, 1867._
My dear Wallace,--I am very much obliged for your article on Mimicry,[61]
the whole of which I have read with the greatest interest. You certainly
have the art of putting your ideas with remarkable force and clearness;
now that I am slaving over proof-sheets it makes me almost envious.
I have been particularly glad to read about the birds' nests, and I must
procure the _Intellectual Observer_; but the point which I think struck
me most was about its being of no use to the Heliconias to acquire in a
slight degree a disagreeable taste.
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