The Origin of Californian Land Shells
The Origin of Californian Land Shells
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In our eReader you can find the full English version of the book. Read The Origin of Californian Land Shells Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Origin of Californian Land Shells
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The great similarity of our banded groups to those of Europe has always been an argument for sui^posing them to have had a common origin. The same similarity is found in many others of our animals as well as plants, and is plainly connected with the well-known similaritj' of climates in the two countries. But as the known laws of nature do not jjermit us to consider climate as the cause of specific resemblances, we mu>t look for some other way of accounting for them in this case.
The fact that ...very similar species exist in Japan and the Amoor Valley, Siberia, contradicts, indeed, the theory of climatic causes, since we know that the climate of those regions is very similar to that of our Atlantic States where no similar species exist. At the same time, their existence there sug- gests the probable central point from which all originated.
Going back in geological history to the sup^josed beginning of all living species, few; if any, of the terrestrial, can be traced farther back than the Eocene Tertiary, and most of them mnoh less far.
What to read after The Origin of Californian Land Shells?
You can find similar books in the "Read Also" column, or choose other free books by J G James Graham Cooper to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The great similarity of our banded groups to those of Europe has always been an argument for sui^posing them to have had a common origin. The same similarity is found in many others of our animals as well as plants, and is plainly connected with the well-known similaritj' of climates in the two countries. But as the known laws of nature do not jjermit us to consider climate as the cause of specific resemblances, we mu>t look for some other way of accounting for them in this case.
The fact that ...very similar species exist in Japan and the Amoor Valley, Siberia, contradicts, indeed, the theory of climatic causes, since we know that the climate of those regions is very similar to that of our Atlantic States where no similar species exist. At the same time, their existence there sug- gests the probable central point from which all originated.
Going back in geological history to the sup^josed beginning of all living species, few; if any, of the terrestrial, can be traced farther back than the Eocene Tertiary, and most of them mnoh less far.
What to read after The Origin of Californian Land Shells?
You can find similar books in the "Read Also" column, or choose other free books by J G James Graham Cooper to read onlineMoreLess
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