. Plant life, considered with special references to form and function. Plant physiology. Fig. 8. Fig. g. Fig. S.—1, chromoplasts from flower-leaves of an orchid; II, from the root of carrot; III, from the fruit of mountain-ash. Embedded in the protoplasmic body of the chromoplast are sometimes proteid pigment-crystals, y", or starch- grains, s. Magnified about looo diam.—After Schimper. Fjg. g. —Chromoplasts from the flesh-colored shoots of the horsetail, containing the coloring matter in the form of granules embedded in colorless protoplasm. ^lag- nified 1400 diam.—After
. Plant life, considered with special references to form and function. Plant physiology. Fig. 8. Fig. g. Fig. S.—1, chromoplasts from flower-leaves of an orchid; II, from the root of carrot; III, from the fruit of mountain-ash. Embedded in the protoplasmic body of the chromoplast are sometimes proteid pigment-crystals, y", or starch- grains, s. Magnified about looo diam.—After Schimper. Fjg. g. —Chromoplasts from the flesh-colored shoots of the horsetail, containing the coloring matter in the form of granules embedded in colorless protoplasm. ^lag- nified 1400 diam.—After Zimmermann. through. The cell-walls of bottle-cork are suberized^ and those in the skin of the apple are cuimized. (2) Some cell- walls are lignified, as, for exanijile, those of wood by reason of. Fig. id,—a part of a thin slice lengthwise through the centre of the stem of garden- balsam. The cells and vessels are elongated and are here seen from the side, show- ing the thickened lines on the side walls of v, v', v", z'"\ Z'"", and v"'". Mag- nified about 400 diam. — After r)uchartre. the presence of certain substances (vanillin, coniferin, etc.). They allow the ready passage of water and gases. (3) Others are so transformed that, in contact with water, they swell enormously, forming a mucilage or gum. These swelling. 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 Barnes, Charles Reid, 1858-1910. New York, H. Holt & company
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