. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Guilliermond - Atkinson 206 — Cytoplasm a substance related to glycogen which is sometimes encountered in bacteria and Phytoflagellates as granules which stain brown with Fig. 143. — Iris germanica. Chondrio somes (M) and plastids (P) in the form of chondrioconts in epidermal cells of the leaf. 1, living material. 2, Meves' method with acid fuchsin. 3, Regaud's method. Lipide granules (Gl) very refractive in 1, blackened by osmium in 2, not preserved in 3. Protein crystalloids are sometimes encountered also in the
. The cytoplasm of the plant cell. Plant cells and tissues; Protoplasm. Guilliermond - Atkinson 206 — Cytoplasm a substance related to glycogen which is sometimes encountered in bacteria and Phytoflagellates as granules which stain brown with Fig. 143. — Iris germanica. Chondrio somes (M) and plastids (P) in the form of chondrioconts in epidermal cells of the leaf. 1, living material. 2, Meves' method with acid fuchsin. 3, Regaud's method. Lipide granules (Gl) very refractive in 1, blackened by osmium in 2, not preserved in 3. Protein crystalloids are sometimes encountered also in the cyto- plasm. In the tubers of white potatoes, for example, a crystalloid of protein is found in the cytoplasm of most of the cells. It is rather large and cubical in shape and is deeply stained by iron haematoxylin. Similar variously-shaped crystalloids (spindle- shaped, cubical etc.) often exist in the plectenchyma of the carpo- spore of the Agaricaceae and in the mycelium of Spermophthora gossypii, as well as in the Mucors, in which they have been de- scribed under the name of crystalloids of mucorine (van Tieghem) . It is suitable also to mention a voluminous spherical inclusion which is present in the cytoplasm of certain special cells of vari- ous Rhodophyceae. This is called an iodine reservoir (Fr. ioduqiie), is very refractive and occupies the major part of the cell. Its nature is still unknown but it seems to contain iodine which is free or in the state of an unstable compound released when the reservoirs are broken. Attention has been called in the same algae to cells called hro- mine reservoirs (Fr. bromuques), which rather analogously contain bromine. Let us mention furthermore that there exist in the proto-. 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 Guilliermond, Alexandre, 1876-; Atk
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Keywords: ., bookcentury1900, bookcollection, booksubjectplantcellsandtissues
