The Light of Egypt Volume 2

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Excerpt: ...with the varying verdure of their ever-changing leaves." Further on in the same chapter, on pages 62-3, the same eloquent writer continues: "But the special chemical changes that go on within the plant, could we follow them, would appear not... Viac o knihe

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Excerpt: ...with the varying verdure of their ever-changing leaves." Further on in the same chapter, on pages 62-3, the same eloquent writer continues: "But the special chemical changes that go on within the plant, could we follow them, would appear not less wonderful than the rapid production of entire microscopic vegetables from the raw food contained in the juice of the grape. It is as yet altogether incomprehensible, even to the most refined physiological chemistry, how, from the same food taken in from the air, and from generally similar food drawn up from the soil, different plants, and different parts of plants, should be able to extract or produce substances so very different from each other in composition and in all of their properties. From the seed-vessels of one (the poppy) we collect a juice which dries up into our commercial opium; from the bark of another (cinchona) we extract the quinine with which we assuage the raging fever; from the leaves of others, like those of hemlock and tobacco, we distil deadly poisons, often of rare value for their medicinal uses. The flowers and leaves of some yield volatile oils, which we delight in for their odors and their aromatic qualities; the seeds of others give fixed oils, which are prized for the table or use in the arts These, and a thousand other similar facts, tell us how wonderfully varied are the changes which the same original forms of matter undergo in the interior of living plants. Indeed, whether we regard the vegetable as a whole, or examine its minutest part, we find equal evidence of the same diversity of changes and of the same production, in comparatively minute quantities, of very different, yet often characteristic forms of matter." From the whole of the foregoing, we observe the exact position to be the one we have previously stated. If such wondrous things can be revealed to us through the physical science of chemistry, what think you must be hidden from our physical sight and...

  • Vydavateľstvo: Books LLC, Reference Series
  • Formát: Paperback
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  • ISBN: 9781153709545

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