. 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 inidtlle they enlarge, and finally coa- lesce to form a mtclem-plate (Fig. 188, n. pi.); 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. pi.) now is formed, and this indicates the partition wall l)etween the two new cells. 105. The cell-contents.—Of the
. 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 inidtlle they enlarge, and finally coa- lesce to form a mtclem-plate (Fig. 188, n. pi.); 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. pi.) now is formed, and this indicates the partition wall l)etween 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, ch); in Spiro- gyra it is in the form of spiral bands (Fig. 189) ; and in Zygnema, another fresh-water Alga, it is in star-like .^^ Fig. 188. Cell-formation by division, in case of Spores of Psilotttm iriguetrjtm: I, lit m. I^t ^i ^A successive stages ; «. //, nucleus-plate; r. pi, cell-plate. Fig. 189. Spirogyra, with chlorophyll in spiral bands. Fig. 190. Zygnema, 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
