32 



mass remains, which does not dissolve in cold and only spai'inglr 

 in boiling water; it is transparent, yellow and brittle when dry, 

 and swells up in water. It dissolves readily in alcohol, acetic 

 acid and caustic alkalies, not in ether, oils and other diluted acids ; 

 is not precipitable by tannic acid. 



Califoriliu. Neutral, bitter substance of the so-called Quina 

 California (from Cascarilla hexandra). Extract the bark with 

 alcohol, evaporate the extract, dissolve in water, precipitate the 

 solution by acetate of lead, filter, remove from the liquid the excess 

 of lead by sulphuret of hydrogen, evaporate, treat with strong 

 alcohol, agitate with charcoal, filter and add ether, which precipi- 

 tates the Californin. When dry, it is gold-yellow, amorphous, 

 dissolves abundantly in water and alcohol, not in ether ; of 

 salicin-]ike taste, does not become coloured with sulphui-ic acid; 

 not precipitable by tannic acid, chloride of platinum, chloride of 

 mercury, chloride of iron and acetate of lead. 



Calllllia Tannic Acid=Ci4 H7 O . In Calkma vulgaris. 

 The alcoholic extract of the herb is distilled, the residue mixed 

 with water, filtered, and precipitated by acetate of lead. The 

 sediment has to be treated with diluted acetic acid, the filtered 

 solution is precipitated boiling hot with sub-acetate of lead, and 

 the deposit decomposed under water by sulphuret of hydrogen ; 

 the liquid is filtered and evaporated in a current of carbonic acid 

 gas. Amber-yellow mass, dissolves in water and alcohol, greens 

 the salts of oxyd of iron. 



Cailll)llor=C2o H16 Oq. Contained in all parts of Cinna- 

 momum Gamphora; obtained by distilling with water and 

 sublimating" the raw product. A tough, white, transparent or 

 translucid substance of crystalline-granular structure of the 

 octahedrons form, of a peculiar, penetrating smell and bitter, 

 aromatic taste, of 0-988 to 0-998 specific gravity at ordinary 

 temperature, at 0°= 1-000, fuses at 175°, boils at 204° and 

 sublimates undecomposed, dissolves in about 1000 pai-ts water^ 

 most readily in alcohol, ether, wood-spirit, aceton and oils. 



Camphor Oil (volatile) from Cinnamomum Camphora. Of 

 sherry-colour, has a density =z 0-9 45, deposits much camj^hor in the 

 cold and when left to evaporate by itself. By repeated rectifi- 

 cations a distillate free from camphor is obtained =:C2o Hie O, 

 which is as clear as water, of great light-refracting power and 

 very mobile, of the odour of camphor and oil of cajeput and of 

 0-91 specific gravity, and leaving a resin but no camphor, when 

 allowed to evaporate spontaneously. 



Cailiplior Oil from Borneo, obtained from Dryobalanops. 

 JSee BouNEiiN. 



