. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 255a. Apricot {PrunmArmeniaca). Epi epicarpwith / hair; / mesocarp fibersX160. (K. B. WiNTON.) BIBLIOGRAPHY. See Bibliography of Almond, p. 337, iitl Peach, p. 339: Hannig; Howard;Micko; Wittmack u. Buchwald; Young. PLUM. Numerous varieties of both the European plum {Primus domestka L.)and the Japanese species (P. trillora Rxb.) arc cultivated throughoutthe temperate zone. The European species includes red, blue, andyellow-green varieties, didering greatly in size a
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 255a. Apricot {PrunmArmeniaca). Epi epicarpwith / hair; / mesocarp fibersX160. (K. B. WiNTON.) BIBLIOGRAPHY. See Bibliography of Almond, p. 337, iitl Peach, p. 339: Hannig; Howard;Micko; Wittmack u. Buchwald; Young. PLUM. Numerous varieties of both the European plum {Primus domestka L.)and the Japanese species (P. trillora Rxb.) arc cultivated throughoutthe temperate zone. The European species includes red, blue, andyellow-green varieties, didering greatly in size and excellence. None ofthe Japanese varieties is blue or purple. Plums never have a hairy epicarp, thus ditTering fre)m the peach andapricot. The stone is smaller than that of the apricot and more elon-gated, but otherwise is similar both in gross and minute structure. PLUM. CHERRY. 341. Fig. 2556. Plum {Pnmusdomestica). Epicarp insurface view. X160. (K. B. WiNTON.) , i. Epicarp (Fig. 2556). The di\dsion of the mother cellsinto daughter cells is clearly evident. The walls are more or less dis-tinctly beaded. In the European plum the cells are seldom o\cr 60 it,in the Japanese varieties still smaller, rarely ex-ceeding 35 jx. The coloring matter of blue andred varieties is confined almost entirely to theepicarp. 2. Mesocarp. Characteristic are the stronglyrefractive masses accompanying the bundleswhich in making jam take up color from theepicarp. The bundles and neighboring thin-walled stone cells are like those of the peach;thick-walled fibers occur rarely. 3. Endocarp. The stone cells have colorlesscontents. Spermoderm (p. 335, V and VI). The stonecells resemble those of the apricot, but the outer end is more strongly thickened, somewhat tapering, and has pits extendingonly part way through the walls. Endosperm. On the broad sides of the seeds there
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