. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. branch), as in common mould (Fig. 171). The variation is as striking in re- gard to size; the cells of Bacterium termo, the common fungus of putrefaction, are about .00009 inch long and .00005 inch broad; the Yeast- plant cells are about .0003 inch in diam- eter; the average size of cells of ordinary plants is .005 to .0005 inch; many cells, as of bast, plant- hairs, etc., are not microscopic as those mentioned
. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. branch), as in common mould (Fig. 171). The variation is as striking in re- gard to size; the cells of Bacterium termo, the common fungus of putrefaction, are about .00009 inch long and .00005 inch broad; the Yeast- plant cells are about .0003 inch in diam- eter; the average size of cells of ordinary plants is .005 to .0005 inch; many cells, as of bast, plant- hairs, etc., are not microscopic as those mentioned above, but attain a length of several inches. 95. A cell consists of four parts, namely: (1) the cell- wall (Fig. 172, w), or cell-membrane, a covering enclosing the cell-contents, which are (2) the protoplasm (Gr. pro- tos, first or primitive ; plasma, form), a transparent, semi- fluid substance (Fig. 172, ^r), con- taining (3) the nucleus, a spher- ical or oval body, denser than the protoplasm (Fig. 172, n), and (4) the cell-sap, a watery fluid oocu- pyiug cavities, called vacuoles (Fig. 172, v). Of these four parts the protoplasm is the only one essential to the growing cell; the other parts may be wanting; swarm spores have no cell-wall;. Fig. IVl, Common Mould (partially diagrammatic). Fig. 172. A cell showing the four parts : to, cell-wall; /r, protoplasm; n, nucleus; «/, nucleolus; v, 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
