. How crops grow. A treatise on the chemical composition, structure, and life of the plant, for all students of agriculture ... Agricultural chemistry; Growth (Plants). THE VOLATILE PART OP PLANTS. 107 cerifera,) and e from mace, (an appendage to the nutmeg-, or fruit of the Myristica moschata.) Crystalloid aleurone.—It has been ah-eady remarked that crystallized albuminoids may be obtained from the blood of animals. It is equally true that bodies of similar character exist in plants, as was first observed by Hartig, {JEntwioJcelungsgeschichte des FflansenJceims, p. 104.) In form they sometime
. How crops grow. A treatise on the chemical composition, structure, and life of the plant, for all students of agriculture ... Agricultural chemistry; Growth (Plants). THE VOLATILE PART OP PLANTS. 107 cerifera,) and e from mace, (an appendage to the nutmeg-, or fruit of the Myristica moschata.) Crystalloid aleurone.—It has been ah-eady remarked that crystallized albuminoids may be obtained from the blood of animals. It is equally true that bodies of similar character exist in plants, as was first observed by Hartig, {JEntwioJcelungsgeschichte des FflansenJceims, p. 104.) In form they sometimes imitate crystals quite perfectly. Fig. 21, a ; in other cases, b, they are rounded masses, having some crystalline planes or facets. They are soft, yield easily to pressure, swell up to double their bulk when. Fig. 21. soaked in weak acids or alkalies, and their angles have none of the constancy peculiar to proper crystals. There- fore the term crystalloid, i. e. having the likeness of crys- tals, is more appropriate than crystallized. As Cohn first noticed, {Jour, filr Frakt. Ghem., 80, p. 129,) crystalloid aleurone may be observed in the outer portions of the potato tuber, in which it invariably jjre- sents a cubical form. It is best found by examining the cells that adhere to the rind of a potato that has been boiled. In Fig. 21, a represents a cell from a boiled pota- to, in the centre of which is seen the cube of aleurone. It is surrounded by the exfoliated remnants of starch- grains. In the same figure, h exhibits the contents of a cell from the seed of the bur reed, {Sparganium ramo- sum,) a plant that is common along the borders of ponds. In the center is a comparatively large mass of aleurone, having crystalloid facets. Digitized by Microsoft®. 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 Jo
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectagricul, bookyear1868
