(no) 



2411. Agaricin. Agaric, Agaricinic, or Laricic, acid (C 16 H 30 5 ). — An acid ex- 



tracted from the preceding. 



2412. Kefir fungi. Kefir grains. — A substance containing the Kefir bacillus 



{Dispora caucasica) used by the Asiatics in the fermentation of milk. 



2413. Cetraria. Iceland moss. — The plant Cetraria islandica Acharius. (Par- 



meliaceae — Parmelia Family). Native of cold regions of the north tem- 

 perate and arctic zones. 



2414. Cetraric acid. Cetrarin (C30H30O12). — A bitter principle extracted from the 



preceding. 



2415. Lichenin (C12H20O10). — A carbohydrate extracted from the same plant. 



2416. Orchil lichen. Tartarean, or Canary, moss. Cudweed. — The plant-body 



of Lecanora tartarea Acharius {Lecanoraceae — Lecanora Family). Native 

 of Northern Asia. 



2417. Cudbear. Persio. — The coloring matter extracted from the preceding and 



other species of Lecanora and Rocella. 



2418. Litmus. Lacmus. Lacca musica. Turnsole. (See No. 1263). — The puri- 



fied form of the preceding. 



2419. Ordinary litmus. — A less pure form of the preceding. 



2420. Azolitmin (C7H7NO4). — The chemical constituent that represents the chief 



coloring principle of litmus. 



2421. Aspidium. Male fern. — The rootstock of Dryopteris Filix-mas (L.) Schott. 



(Polypodiaceae — Polypody Family). Native of the north temperate zone 

 and high mountains of the Tropics. 



2422. Filicic, or Filicinic, acid (CuHieOe). — An acid derived from the preceding. 



2423. Filicin. — The anhydrid of the preceding acid and the chief medicinal con- 



stituent of male fern. 



2424. Resina. Rosin. Colophony. (See No. 1201.) 



2425. Abietic acid (C44H64O6). — An acid derived from common rosin. 



2426. Sylvic acid. (CioHsoOs). — Another acid extracted from common rosin. 



2427. Succinum. Amber. (See No. 1227.) 



2428. Succinic acid (C 4 H 6 04). — An acid derived from the preceding. 



2429. Yew leaves. Taxus leaves. — The leaves of Taxus baccata L. {Taxaceae — 



Yew Family). Native of Europe and Asia and cultivated for ornament. 



2430. Taxine (C37HS1NO10). — An alkaloid extracted from the preceding. 



2431. Joint fir. Helvetian Ephedra. — The stems of Ephedra helvetica C. A. Meyer 



(Gnetaceae — Gnetum Family). Native of Europe. 



2432. Ephedrine (Ci H 16 NO). — An alkaloid extracted from the preceding. 



2433. Dextrose. Grape, starch, corn, or honey, sugar. Dextroglucose (CgHuOe). 



— A sugar obtained by the inversion of cane sugar and existing naturally 

 in many fruits and other plant substances. 



2434. Dextrin (CjHioOs). — A carbohydrate obtained by conversion from starch. 



2435. Levulose. Fructose or fruit sugar (CeHijOe). — A sugar obtained by hydroly- 



sis from cane sugar and existing naturally in many fruits. 



2436. Malt. (See No. 2351.) 



2437. Diastase. — An enzyme existing in barley and other grains for the conver- 



sion of their starch into sugar. 



2438. Maltose. Malt sugar. (CuHnOu)> Sugar produced from starch by the 



action of diastase. 



