2439. 
2440. 
2441. 
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2445. 
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2447. 
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2467. 
(111) 
Invertin. Invertase. Zymase.—An enzyme existing in yeast, and capable 
of converting starch into sugar. 
Dragon’s-blood. Resina Draconis.—A solid balsam obtained as an exudation 
on the fruit of several species of Calamus (Palmae—Palm Family). Native 
of the East Indies. 
Benzoic acid (C;H,O2).—An acid derived from the preceding and from some 
other vegetable substances. 
Cinnamic acid (HC,H;0,). 
Areca. Areca nuts. Betel nuts. (See No. 2141.) 
Arecoline (CsH}3;NOz).—The chief of several alkaloids existing in the pre- 
ceding. 
Convallaria. Lily-of-the-Valley—The herbage and roots of Convallaria 
majalis L. (See No. 1779.) 
Convallarin (C3sHs20u).—A glucoside existing in the preceding. 
Convallamarin (C23HsOi2).—Another glucoside from the same. 
Asparagus root.—The roots of Asparagus officinalis L. (Convallariaceae— 
Lily-of-the-Valley Family). Native of Europe and Asia and cultivated. 
Asparagus.—The young stems of the same plant. 
Asparagin.. Asparamide (C4HsN203;+H20).—A constituent of the preceding 
and of many other plants in their young state. 
Squill. Scilla—The bulb of Urginea maritima (L.) Baker. (Liliaceae— 
Lily Family). Native of the Mediterranean region. 
Commercial dried squill root. 
Scillipicrin.—A bitter principle of uncertain chemical composition contained 
in the preceding. 
Scillitin——A similar principle from the same. 
Scillitoxin.—Another of the same group. 
Colchicum root.—The corm of Colchicum autumnale L. (Same family). 
Native of Europe and cultivated as a drug and for ornament. 
Colchicum seed.—The seeds of the same plant. 
Colchicine (Cy2H2s;NOs).—The principal alkaloid of the preceding two pro- 
ducts. 
Curacao aloes. Aloe curassavica.—The inspissated juice of Aloe vera (L.) 
Webb. (Same family). Native of India and naturalized in the West 
Indies. 
Aloin (CjsHieO7 + 3H2O).—An amaroid existing in the preceding and in 
other species of Aloe. 
Cevadilla. Sabadilla—The seeds of Schoenocaulon officinale (Sh. & Sch.) 
A. Gray. (Melanthiaceae—Bunch-flower Family). Native of tropical 
America. 
Sabadine (Cz9Hs,NOs).—An alkaloid extracted from the preceding. 
Sabadinine. (C27H4sNOs).—Another alkaloid from the same. 
Cevadine. (Cj2H43NOn).—Another of the same group. 
Sabadilline—Another of the same group. 
Veratrum viride. American greenhellebore. Indian poke.—The rootstock 
and roots of Veratrum viride Ait. (Same family). Native of eastern North 
America. 
Veratric acid. (Cg gH;o04).—An acid extracted from Veratrum viride Ait. 
