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[[preprinted]]

WM. H. CROCKER,
President Board of Trustees

SUSIE M. PEERS,
Secretary Board of Trustees

F.M. MAC FARLAND
President of the Academy and Acting Director of the Museum and of the Steinhart Aquarium

CALIFORNIA ACADEMY OF SCIENCES
GOLDEN GATE PARK
SAN FRANCISCO, CALIFORNIA

TELEPHONE BAYVIEW 5100
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It seems strange to me that Darwin did not know of Porter's notes on Galapagos tortoises. As you know it was Porter who first called attention to the fact that the tortoises from the different islands were different. I should think the scientists would have known of these notes by 1835. Porter mentions this fact in his Journal of a Cruse made to the Pacific Coast

I enjoyed the article very much and I can easily see where the magazine would be glad to get it. I think the National Geographic goes in more for descriptive travel of countries where tourists can get to. Some of your pictures make me feel homesick!! Many a night I spent trying to get a wink of sleep in those caves on Charles. I suppose you will be starting down again before long. With best wishes and congratulations on your article, I remain

Very truly yours,
[[signature: Joseph R. Slevin?]]
California Academy of Sciences.