. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. 82 HISTOLOGY AND each other. In the midtlle they enlarge, and finally coa- lesce to form a nudevs-plate (Fig. 188, n-pl.); the latter divides, and the two halves recede to the poles to form the two nuclei. Then where the nu- cleus-plate originally arose, a cell-plate (Fig. 188, c. j)l^ now is formed, and this indicates the partition wall between the two new cells. 105. The cell-contents.^—Of the ce
. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. 82 HISTOLOGY AND each other. In the midtlle they enlarge, and finally coa- lesce to form a nudevs-plate (Fig. 188, n-pl.); the latter divides, and the two halves recede to the poles to form the two nuclei. Then where the nu- cleus-plate originally arose, a cell-plate (Fig. 188, c. j)l^ now is formed, and this indicates the partition wall between the two new cells. 105. The cell-contents.^—Of the cell products, the chlorophyll (Gr. chloros, green ; phyllon, leaf) is the first in importance. It is the green coloring matter in the cells. In ordinary tissue it is in the form of grains (Fig. 184, c/t) ; in Spiro- gyra it is in the form of spiral hands (Fig. 189) ; and in Zygnenia, another fresh-water Alga, it is in star-like Fig. 188. Cell-formalion by division, in case of Spores of Psilotunt triquetntm ; It II, III. IV, V, VI, successive stages; n. pi, nucleus-plate; , cell-plate. Fig. 189. Spirogyra, with chlorophyll in spiral bands. Fig. iOO. Zygnetna, with chlorophyll in stellate 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 Kellerman, William Ashbrook, 1850-1908. Philadelphia, J. E. Potter and Company
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1883
