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nydus/Life and Letters of Charles Darwin — Volume 1Public

This volume presents a collection of Charles Darwin's personal correspondence, organized primarily by the subjects of his research and publications. The letters are supplemented by excerpts from his diary to provide a chronological framework for his professional career and personal character.

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Table of Contents

CHAPTER 1.X. — THE GROWTH OF THE 'ORIGIN OF SPECIES.'

with an a priori view of the probability of the origin of species by descent ["propagation," he called it.].

"The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen."

"There never may have been grade between pig and tapir, yet from some common progenitor. Now if the intermediate ranks had produced infinite species, probably the series would have been more perfect."

At another place, speaking of intermediate forms he says:—

"Cuvier objects to propagation of species by saying, why have not some intermediate forms been discovered between Palaeotherium, Megalonyx, Mastodon, and the species now living? Now according to my view (in S. America) parent of all Armadilloes might be brother to Megatherium—uncle now dead."

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