. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . ameter. DIAGNOSIS. Pumpkin Pulp is not only used for making pies, but also for adulterat-ing tomato catsup, jams, and other fruit products. The microscopic elements of the pulp of chief value in diagnosis,are the broad vessels, the latex tubes, the yellow epicarp (Fig. 308) withcolorless stomata, and the reticulated spongy parenchyma of the are best found in the coarser material obtained by straining througha sieve. Pumpkin-seed Cake is obtained in limited am
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . ameter. DIAGNOSIS. Pumpkin Pulp is not only used for making pies, but also for adulterat-ing tomato catsup, jams, and other fruit products. The microscopic elements of the pulp of chief value in diagnosis,are the broad vessels, the latex tubes, the yellow epicarp (Fig. 308) withcolorless stomata, and the reticulated spongy parenchyma of the are best found in the coarser material obtained by straining througha sieve. Pumpkin-seed Cake is obtained in limited amount as a by-productin the manufacture of pumpkin-seed oil. The characteristic tissues ofthe spermoderm (Fig. 310) include the ribbed palisade epidermis {ep),the pitted parenchyma of the second layer {hy), the sclerenchyma cellswith wavy outline {scl), and the reticulated spongy parenchyma {m~). 402 VEGETABLES. SQUASH. Fruits of numerous varieties of the winter squash (Cucurbita maximaDuch.) are put to the same uses as the pumpkin. They are widely dif-ferent in macroscopic characters, and according to Harz arc somewhat. Ir—am Fig. 310a. Crook-necked Squash {Cucurbita Pepo var. verrucosa). Pericarp in cross sc(tion. epi epicarp with / hair and 5/0 stoma; Av hypoderm; 5/outer mesocarp (stone-cell layer) with x spherical cavity; rues middle mesucarp with/r bundle and </w starchgrains. X160. (Bardicr.) different in histological structure. In the main, however, their structurecorresponds closely with that of the pumpkin. Of the summer stjuashes the crook-necked (C. Pepo. \ar. verrucosaNaud.) and the turban squash (var. Mehpepo L.) are the best known. SQUASH. CUCUMBER. 403 The structure of the crook-neck squash (Fig. 310a) differs from thatof the pumpkin chiefly in the persistence of jointed (/) and glandularhairs until maturity and the presence of a dense stone cell layer (st) inthe outer mesocarp. The epidermal ribs of the seed branch along theirwhole length, whereas in the pu
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