...writes) by discovering in the Fampean formation great fossil animals covered with armour like that of the existing armadillos ; secondly, by the manner...which closely allied animals replace one another in spreading southwards over the continent ; thirdly, by the South American character of most of the productions...

...Darwin wrote in 1876 as follows : — " During the voyage of the Beagle I had been deeplyimpressed by discovering in the Pampean formation great fossil animals covered with armour like that of the existing armadilloes." ° And this he enumerates as the first, though not the most important,...

...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...closely allied animals replace one another in proceeding southwards over the Continent ; and thirdly, by the South American character of most of the productions...

...observing, and to experimenting in relation to the transmutation of species. During the voyage of the Beadle 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...

...observing, and to experimenting in relation to the transmutation of species. During the voyage of the Beadle 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...

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...observing, and to experimenting in relation to the transmutation of species. During the voyage of the Beadle 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...

...compared with thit of any other author whose works I had with me or ever afterwards read." (I, p. 62.) by discovering in the Pampean formation great fossil...existing armadillos ; secondly, by the manner in which closely-allied animals replace one another in proceeding southwards over the continent ; and, thirdly,...

...to the transmutation of species. From his observations during the voyage of the Beagle, he had been impressed by discovering in the Pampean formation great fossil animals covered with armour like that of the existing armadillos ; secondly, by the manner in which closely allied animals replace one another...

...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...closely allied animals replace one another in proceeding southwards over the Continent ; and thirdly, by the South American character of most of the productions...