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Download torrent On Molecular and Microscopic Science Volume 1

Download torrent On Molecular and Microscopic Science Volume 1

On Molecular and Microscopic Science Volume 1 by Mary Somerville

On Molecular and Microscopic Science Volume 1
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Author: Mary Somerville
Number of Pages: 128 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130219777
File Name: On.Molecular.and.Microscopic.Science.Volume.1.pdf
Download Link: On Molecular and Microscopic Science Volume 1
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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. 1869 Excerpt: ...cellulose division or septum becomes continuous with a new layer which is formed throughout the interior of the cellulose wall of the original cell. In this manner two perfect cells are formed out of one, and as the extreme cell may undergo the same process, the growth of the plant may be continued indefinitely. Branches are sometimes formed by buds springing from any part of the stem; though Fig. 17. Cell multiplication in Conferva glomerata: --A, portion of filament with incomplete separation at a, complete partition at 6; B, the separation completed; c, formation of additional layers of cellulose wall. 208 Confervacejb. Part n. apparently so different, it results from the subdivision of the cell which produces the bud. The Confervacese are generally reproduced by zoospores. In most cases the endochrome within a cell divides itself into numerous segments, each of which becomes a minute zoospore, and escapes into the water through a rupture in the cell wall. This is the case in a very graceful genus of Confervse, of which the Chsetophora elegans is a species. It consists of filamental strings of cells, ending in a capillary bristle, with lateral branches like narrow fronds. It is reproduced by zoospores. One half of each zoospore is round, opaque, and full of matter; the other half hyaline, and tapering to a beak furnished with four cilia. It frequently happens in this genus of Confervacese, where the filaments are divided at equal distances into little joints or compartments, that the zoospores issue from the terminal cell first, then from the next, and so on in succession till the upper part of the branch is left empty, while the lower part is still forming zoospores. After moving in water for a time, the zoospores Kg. is. zoospores. retreat to a shady pl..

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