...studies might not have been more profitable that we transcribe it : " During the voyage of the Beagle I had been deeply impressed by discovering in the...closely allied animals replace one another in proceeding southwards over the Continent ; and thirdly, by the South American character of most of the productions...

...his thought began to set in the direction of Descent, stimulated by the deep impression made upon him "by discovering in the Pampean formation great fossil...with armour like that on the existing armadillos, and by the manner in which closely allied animals replace one another in proceeding southwards over...

...prepared to reflect on the transformations of organisms. During the voyage, as he afterwards wrote, he had been " deeply impressed by discovering in the...closely allied animals replace one another in proceeding southwards over the Continent ; * See The Life and Letters of Charles Darwin, by his son, F. Darwin...

...impressed by discovering in the Pampean formation great fossil ani* Published by the Bay Society. mala covered with armour like that on the existing armadillos ; secondly, by the manner in which closely allwd animals replace one another in proceeding southwards over the Continent; and thirdly, by the...

...observing, and to experimenting in relation to the transmutation of species. During the voyage of the Beagle I had been deeply impressed by discovering in the Pampean formation great fossil ani* Published by the Bay Society. mals covered with annour like that on the existing armadillos ;...

...by the structure of these regions. "During the voyage of the Beagle," he wrote in his Autobiography, I had been deeply impressed by discovering in the...closely allied animals replace one another in proceeding southwards over the Continent; and thirdly, by the South American character of most of the productions...

...his evolutionary ideas. As stated by Darwin in his autobiography: "During the voyage of the Beagle I had been deeply impressed by discovering in the...closely allied animals replace one another in proceeding southwards over the continent: thirdly, by the South American character of most of the productions...

...observations which Darwin, himself, considered important in leading him from orthodoxy to revolution: the existing armadillos; secondly, by the manner in...closely allied animals replace one another in proceeding southwards over the Continent; and thirdly, by the South American character of most of the productions...

...his observations on the Beagle now seemed accessible to explanation: "During the voyage of the Beagle I had been deeply impressed by discovering in the...another in proceeding southward over the continent; and thirdly, by the South American character of most of the production of the Galapagos archipelago, and...

...observing and experimenting, in relation to the transmutation of species. During the voyage of the Beagle I had been deeply impressed by discovering in the...closely allied animals replace one another in proceeding southwards over the Continent; and thirdly by the South American character of most of the productions...