. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . at and distorted aleurone grains, each grain with a globoidin a sort of beak and an indistinct crystalloid in the body. Embryo (Fig. 164, ep- and mes). The cells contain large, o^•oid aleuronegrains up to 20 /i long, like those of the endosperm, also minute grains. Tschirch and Oesterle recommend mounting in alcohol and runninga water solution of iodine under the cover, thus staining the crystalloidyellow. DIAGNOSIS. Flax Bran consists largely of pericarp tissues. The pa
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . at and distorted aleurone grains, each grain with a globoidin a sort of beak and an indistinct crystalloid in the body. Embryo (Fig. 164, ep- and mes). The cells contain large, o^•oid aleuronegrains up to 20 /i long, like those of the endosperm, also minute grains. Tschirch and Oesterle recommend mounting in alcohol and runninga water solution of iodine under the cover, thus staining the crystalloidyellow. DIAGNOSIS. Flax Bran consists largely of pericarp tissues. The papery endoarpand dissepiment (Fig. 162) are characteristic. Ground Linseed is used chiefly as a drug, but linseed cake from theoil presses and the ground cake, known as linseed meal, arc highly es-teemed by cattle feeders. 2o6 OIL SEEDS. The conspicuous elements are pieces of the yellow outer spermoderm,consisting of round cells (Fig. 164, r), fibers (/), and cross cells (/r),and also the nearly square, faintly beaded pigment cells {pig) with browncontents. These tissues are highly characteristic and permit the detec-. iSojJgji Fio. 1O4. Linseed. Elements in surface view, ep^ epidermis of spermoderm; r roundcells; / fiber layer; x middle lamellx of fiber layer; Ir cross cells; pig pigment cells;E endosperm with al aleurone grains; ep^ epidermis of cotyledon with sto immaturestoma; mes mesophyl. X300. (K. B. Winton.) tion of small amounts of linseed products in mixtures. Starch shouldnot be present in appreciable amount. Linseed Cake and the ground cake known as Linseed Meal arc oftencontaminated with cruciferous and other seeds. The meal is itself used as an adulterant for black pepper and otherspices, and as an ingredient of many mixed cattle foods. BIBLIOGRAPHY. See General Bibliography, pp. 671-674: Bcnecke (2); Berg (3); Bohmer (6,10, 23);Collin (8); Fluckiger (i i); Hanausek, T. F. (10, 16, 17, 48); Harz, {18); Mac6 (26);Meyer, A. (28); Moeller (29 30, 31, 32); Schimper (
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