. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 343. Dandelion {LeontodonTaraxacum). Bark of root in longi-tudinal section showing latex tubes. (TSCHIRCH.) Fig. 344. Dandelion. Wood of root in longi-tudinal section, g reticulated vessels with quperforation; hp wood parenchyma; m medul-lary ray. X160. (MOELLER.) are not easily found in chicory. The reserve material exists largely asinuhn, which in alcohol material forms sphaero-crystals. DIAGNOSIS. The greater length of the pores in the vessels (Fig. 344 g) serves
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 343. Dandelion {LeontodonTaraxacum). Bark of root in longi-tudinal section showing latex tubes. (TSCHIRCH.) Fig. 344. Dandelion. Wood of root in longi-tudinal section, g reticulated vessels with quperforation; hp wood parenchyma; m medul-lary ray. X160. (MOELLER.) are not easily found in chicory. The reserve material exists largely asinuhn, which in alcohol material forms sphaero-crystals. DIAGNOSIS. The greater length of the pores in the vessels (Fig. 344 g) serves todistinguish this root from chicory. Latex tubes (Fig. 343) are present inboth roots. BIBLIOGRAPHY. See General Bibliography, pp. 671-674: Moeller (29, 2,2); Planchon et Collin(34);Tschirch u. Oesterle (40); Vogl (44, 45). 442 ALKALOIDAL PRODUCTS. COCOA BEAN. Chocolate and Cocoa arc products of the beans or seeds of severalsmall trees, natives of tropical America, of which Theohroma Cacao L.(onkr SterculiacecE) is by far the most important. The value of cocoabeans ^^•as known to the aborigines, especially the Aztec
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