(Ill) 



2439. Invertin. Invertase. Zymase. — An enzyme existing in yeast, and capable 



of converting starch into sugar. 



2440. 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. 



2441. Benzoic acid (C 7 H 6 2 ).— An acid derived from the preceding and from some 



other vegetable substances. 



2442. Cinnamic acid (HC9H7O2). 



2443. Areca. Areca nuts. Betel nuts. (See No. 2 141.) 



2444. Arecoline (C 8 Hi 3 N0 2 ).— The chief of several alkaloids existing in the pre- 



ceding. 



2445. Convallaria. Lily-of-the-Valley. — The herbage and roots of Convallaria 



majalis L. (See No. 1779.) 



2446. Convallarin (CmH 62 0ii). — A glucoside existing in the preceding. 



2447. Convallamarin (CssHmOu). — Another glucoside from the same. 



2448. Asparagus root. — The roots of Asparagus officinalis L. {Convallariaceae — 



Lily-of-the-Valley Family). Native of Europe and Asia and cultivated. 



2449. Asparagus. — The young stems of the same plant. 



2450. Asparagin. Asparamide (C4H 8 N 2 03+HaO).— A constituent of the preceding 



and of many other plants in their young state. 



2451. Squill. Scilla. — The bulb of Urginea maritima (L.) Baker. (Liliaceae — 



Lily Family). Native of the Mediterranean region. 



2452. Commercial dried squill root. 



2453. Scillipicrin. — A bitter principle of uncertain chemical composition contained 



in the preceding. 



2454. Scillitin. — A similar principle from the same. 



2455. Scillitoxin. — Another of the same group. 



2456. Colchicum root. — The corm of Colchicum autumnale L. (Same family). 



Native of Europe and cultivated as a drug and for ornament. 



2457. Colchicum seed. — The seeds of the same plant. 



2458. Colchicine (CwHjfjNOe) — The principal alkaloid of the preceding two pro- 



ducts. 



2459. Curacao aloes. Aloe curassavica. — The inspissated juice of Aloe vera (L.) 



Webb. (Same family). Native of India and naturalized in the West 

 Indies. 



2460. Aloin (CieHieO: + 3H2O). — An amaroid existing in the preceding and in 



other species of Aloe. 



2461. Cevadilla. Sabadilla. — The seeds of Schoenocaulon officinale (Sh. & Sch.) 



A. Gray. {Melanthiaceae — Bunch-flower Family). Native of tropical 

 America. 



2462. Sabadine (QioHuNOs). — An alkaloid extracted from the preceding. 



2463. Sabadinine. (C27H46NO8). — Another alkaloid from the same. 



2464. Cevadine. (C32H49NO11). — Another of the same group. 



2465. Sabadilline. — Another of the same group. 



2466. Veratrum viride. American green hellebore. Indian poke. — The rootstock 



and roots of Veratrum viride Ait. (Same family). Native of eastern North 

 America. 



2467. Veratric acid. (C9H10O4). — An acid extracted from Veratrum viride Ait. 



