Robertson? If
so, you can tell me if my paper is printed in full.
I suppose you have read Agassiz's marvellous theory of the Great
Amazonian glacier, 2,000 miles long! I presume that will be a _little_
too much, even for you. I have been writing a little popular paper on
"Glacial Theories" for the _Quarterly Journal of Science_ of January
next, in which I stick up for glaciers in North America and icebergs in
the Amazon!
I was very glad to hear from Lubbock that your health is permanently
improved. I hope therefore you will be able to give us a volume per
annum of your _magnum opus_, with all the facts as you now have them,
leaving additions to come in new editions.
I am working a little at another family of my butterflies, and find the
usual interesting and puzzling cases of variation, but no such phenomena
as in the Papilionidae.--With best wishes, believe me, my dear Darwin,
yours very faithfully,
ALFRED R. WALLACE.
* * * * *
_6 Queen Anne Street, W. Monday, January, 1867._
My dear Wallace,--I return by this post the _Journal_.
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