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Transactions of the Linnean Society Volume 18 book

Transactions of the Linnean Society Volume 18 book

Transactions of the Linnean Society Volume 18. Linnean Society of London

Transactions of the Linnean Society Volume 18
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Author: Linnean Society of London
Page Count: 250 pages
Published Date: 13 Sep 2013
Publisher: Rarebooksclub.com
Publication Country: United States
Language: English
ISBN: 9781236812353
Download Link: Transactions of the Linnean Society Volume 18
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1841 edition. Excerpt: ... transparent balls, which altogether resemble their gravid parents; they swam and moved about with greater power and vigour; and their more active and busy movements struck me as if they were under a more decidedly spontaneous control or influence. Rmsel's figures above referred to are accurate--J. H., May 16, 1839. One of these bodies I likewise put by itself in a watch-glass containing a little water, which I placed on the stage of the microscope for the purpose of continuing to witness with that instrument more minutely its process of development; the water being changed two or three times a day, the germlike body at first moved a good deal about the glass; it then began to keep nearly in the same place, only turning gently round as if on itslaxis; becoming afterwards stationary, it fixed itself to the glass, and changed into a small spot of a white opake substance; which, while growing in the Water, appeared under the microscope to be solely gelatinous, but when it had been dried for a day or two, minute cells and fibres or spicula were manifest. At this time I was repeating the experiment of growing the Spongilla from its seedlike sporidia or sporules, as I had only imperfectly done so in the preceding March. Having taken many of these fresh seedlike bodies from their fixed localities in the cells or pores of the Sponge, I deposited them in a china dish nearly filled with water, which I renewed twice a day. I was most attentive in examining not only with my naked eye, but also with a powerful lens, whether these bodies possessed any spontaneous motions, but could not discover the least appearance of any; on the contrary, the instant they were put into the water they sunk to the bottom of the dish; there remaining motionless, ...

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