Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . ent which is colored yellowish-red with acids andbright green with alkalies. Arbutin is a bitter glucoside, which crystallizes in needles or prisms,and the cells containing it may be determined by the use of nitricacid, which colors them orange-yellow to dark reddish-brown. Itoccurs distributed in the cells of the loose mesophyll and palisadelayers of Chimaphila. Arbutin yields, upon hydrolysis, glucose andhy
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . ent which is colored yellowish-red with acids andbright green with alkalies. Arbutin is a bitter glucoside, which crystallizes in needles or prisms,and the cells containing it may be determined by the use of nitricacid, which colors them orange-yellow to dark reddish-brown. Itoccurs distributed in the cells of the loose mesophyll and palisadelayers of Chimaphila. Arbutin yields, upon hydrolysis, glucose andhydrochinon. The latter substance is sublimable, and may be easilyobtained as a microsublimate. The sections of the leaves of Chim-aphila, or a small quantity of the powdered leaves, are first treatedwith a few drops of dilute hydrochloric acid or a solution of emulsin. PIPSISSEWA 505 If the material thus treated is placed upon a watch crystal, which iscovered with another watch crystal, or a slide and gently heated uponan iron plate, or a strip of asbestos, a microsublimate of hydrochinonmay be collected. The latter consists of long monoclinic rods and ^o^OCX^X) ^f^o5oobo& ^55^.
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
