Darwin Correspondence Project

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To the President of the Geological Society.—

I have read Mr Darwin's paper and think that it ought to be printed. If possible, the early, or historical part, should be made shorter. The concluding or theoretical part is not all clearly brought out, & might be reconsidered by the author with some advantage: Not with any view of altering his theoretical opinions (for he only is responsible for them) but for the purpose of making them more definite & unequivocal— The main facts on which the paper hinges & the immediate deductions deduced from them appear incontrovertible.

A Sedgwick—