214 



Carbohydrates. 



471. DINITRO-CELLULIN. C 18 H^ (N 2 ) 2 16 . (Solubk Guncotton, 



Pyroxylin.) 



a. Commercial specimen. 



b. Solution in a mixture of ether and alcohol (Collodium., 



B.P.) 



c. Ditto, mixed with castor oil. (Collodium Flexile, B.P.) 



GLUCOSES. C 6 H, 2 6 . 



472. DEXTROSE. C 6 H 12 6 . (Glucose, Dextroglucose.) 



a. Prepared from starch. (Starch Sugar.) 



b. Prepared from rags. (Rag Sugar.) 



c. Prepared from honey. (Honey Sugar.) 



d. Prepared from grapes. (Grape Sugar.) 



e. Prepared from diabetic urine. (Diabetic Sugar.) 



473. LEVDLOSE. C 6 H 12 6 . 



a. Obtained from cane sugar. 



SA CCH AROSE S. C 12 H^ O n . 



474. SACCHAROSE. C^H^O^. (Cane Sugar, Diglucosic Alcohol.) 



a. Crystallized, obtained from the sugar cane. 



b. Ditto, obtained from beet root. 



c. Ditto, obtained from the sugar maple. 



Note. For other specimens, see Mat. Med. Catalogue, p. 15, No. 74 

 and p. 156, No. 641. 



d. Amorphous. (Barley Sugar.) 



e. Ditto, restored to a minutely crystalline state (Sac- 



charum penidium.) 



475. MELITOSE. C 12 H 22 O n . 



a. Impure. (Eucalyptus Manna.) 

 Note. See also Mat. Med. Catalogue, p. 46, No. 244. 



476. LACTOSE. C 12 H 22 U , H 2 0. (Sugar of Mill; Lactin). 



a. Crystallized. 



477. MYCOSE . C 12 H 22 O n , 2 H 2 0. (Sugar of Ergot.) 



a. Crystallized, prepared from ergot. 

 Note. Presented by Mr. F. M. Eimmington. 



478. TKEHALOSE. C 12 H 22 O n , 2 H 2 O. 



a. Impure. (Trehala Manna). 

 Note. See also Animal Mat. Med. Catalogue, p. 258, No. 796. 



GLUCOSIDES. 



479. ^ESCULIN. C 21 H 24 13 . (Gelseminic Acid.) 



a. In crystals. 



Note. This substance was prepared from the bark of the horse-chestnut 

 tree (CEsculus Hippocastanum, L.). For a solution of it, see the specimens 

 illustrating fluorescence, on the east side of the Chemical Museum. 



