. Annals of the Royal Botanic Gardens, Peradeniya. Royal Botanical Gardens, Peradeniya; Plants -- Sri Lanka; Plants. Or. we simplify the problem enormously, and this simpUfication alone makes a very great claim for the new theory, if it cannot be shown to break down in any way in explaining geographical distribution. The figures which we have just given explain the essential difference between the two theories. On the theory of infini- tesimal variations it is necessary to assume a vast amount of destruction, while on that of mutation there is no need to assume this, unless the mutations are a

. Annals of the Royal Botanic Gardens, Peradeniya. Royal Botanical Gardens, Peradeniya; Plants -- Sri Lanka; Plants. Or. we simplify the problem enormously, and this simpUfication alone makes a very great claim for the new theory, if it cannot be shown to break down in any way in explaining geographical distribution. The figures which we have just given explain the essential difference between the two theories. On the theory of infini- tesimal variations it is necessary to assume a vast amount of destruction, while on that of mutation there is no need to assume this, unless the mutations are a Stock Photo
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Library Book Collection / Alamy Stock Photo

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RMNC15

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7.1 MB (82.2 KB Compressed download)

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2277 x 1097 px | 38.6 x 18.6 cm | 15.2 x 7.3 inches | 150dpi

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. Annals of the Royal Botanic Gardens, Peradeniya. Royal Botanical Gardens, Peradeniya; Plants -- Sri Lanka; Plants. Or. we simplify the problem enormously, and this simpUfication alone makes a very great claim for the new theory, if it cannot be shown to break down in any way in explaining geographical distribution. The figures which we have just given explain the essential difference between the two theories. On the theory of infini- tesimal variations it is necessary to assume a vast amount of destruction, while on that of mutation there is no need to assume this, unless the mutations are actually harmful in the struggle for existence. There is consequently no reason, so far as we can tell, why the ivhole tree of a natural order sJwuld not acttwUy exist on the earth at this present moment. If we apply. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Royal Botanical Gardens, Peradeniya; Ceylon. Dept. of Agriculture. Colombo : Skien ; London : Dulau

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