This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ... the whole progress of modern investigation is in favour of the doctrine of continuity, it is a fair and probable speculation--though only a speculation--that, as there are some plants which can manufacture protein out of such apparently intractable mineral matters as carbonic acid, water, nitrate of ammonia, ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ... the whole progress of modern investigation is in favour of the doctrine of continuity, it is a fair and probable speculation--though only a speculation--that, as there are some plants which can manufacture protein out of such apparently intractable mineral matters as carbonic acid, water, nitrate of ammonia, metallic and earthy salts; while others need to be supplied with their carbon and nitrogen in the somewhat less raw form of tartrate of ammonia and allied compounds; so there may be yet others, as is possibly the case with the true parasitic plants, which can only manage to put together materials still better prepared--still more nearly approximated to protein--until we arrive at such organisms as the Psorospermice and the Panhistophyton, which are as much animal as vegetable in structure, but are animal in their dependence on other organisms for their food. The singular circumstance observed by Meyer, that the Torula of yeast, though an indubitable plant, still flourishes more vigorously when supplied with the complex nitrogenous substance, pepsin; the probability that the Peronospora is nourished directly by the protoplasm of the potatoplant; and the wonderful facts which have recently been brought to light respecting insectivorous plants, all favour this view; and tend to the conclusion that the difference between animal and plant is one of degree rather than of kind, and that the problem whether, in a given case, an organism is an animal or a plant, may be essentially insoluble. VII. A LOBSTER; OR, THE STUDY OF ZOOLOGY. 1861. Natural History is the name familiarly applied to the study of the properties of such natural bodies as minerals, plants, and animals; the sciences which embody the knowledge man has acquired upon these subjects are...
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