As Secretary of the Geological Society of London, formally expresses his thanks for initial numbers of Proceedings of the American Philosophical Society.
Geological Society of London | Somerset House.
I am requested by the Geological Society to express their thanks for the donation of
“Proceedings of the American Philosophical Society
I have the honor to be | Sir, | Your most obedient |
and very humble Servant | Chas. Darwin | Secretary
To | The Secretary of the | American Philosophical Society