63 



Cymeil or C,vmol = C2o H14. In the volatile oils of Cumin vim 

 Cyminum, Cicuta virosa, Carum Ajowan, also in the oil of Thymus 

 vulgaris and expected to exist in many other plants of Umbelli- 

 ferse and Labiatse. That portion of the oil of cumin which dis- 

 tils below 200°, has to be rectified over melting caustic potash, 

 which retains the whole of the cuminol as cumate of potash. — 

 Colourless oil of great light-refracting power, smells pleasantly like 

 lemons; of 0-86 density; boils at 171°. 



Cyiiapill. Alkaloid said to occur in ^thusa Cynapium, to 

 crystallise in prisms, to dissolve in water and alcohol, but not in 

 ether, to j)ossess an alkaline reaction and to yield a crystallisable 

 salt with sulphuric acid. 



Cyperus Oil =: Oil of Cyperus esculentus. 



Cytisill. Alkaloid of the ripe seeds of Cytisus Laburnum. 

 Throw down the aqueous extract with subacetate of lead, filter, 

 precipitate with tannic acid, mix the deposit with oxyd of lead, 

 dry, exhaust with alcohol, evaporate the tincture, saturate with 

 nitric acid, mix the well-crystallising salt with oxyd of lead, dry 

 and exhaust with absolute alcohol. The pure C. crystallises in the 

 latter as a colourless, radiated crystalline, deliquescent mass which 

 sublimates undecomposed by careful heating ; has a strongly alka- 

 line reaction and saturates the acids completely. 



[DambOllit = Cg Hg Oe . Variety of sugar, found by A. Girard 

 in the Gaboon caoutchouc, which is the exudation of Landoljihia 

 Owariensis and other species of that genus. It is obtained from 

 the recently-inspissated juice by treating with aqueous alcohol. — 

 It is white, of a sweet taste, easily soluble in water and aqueous 

 alcohol, sparingly in absolute alcohol. It crystallises from alcohol 

 in six-sided prisms, from water in oblique prisms with 1^ HO. 

 It is not fermentable and does not reduce the alkaline copper 

 solution. D. becomes carbonised by hot sulphuric acid, and is 

 oxydised to oxalic and formic acids by hot nitric acid. Concen- 

 trated alkalies are without any influence on D. even at 100° C, 

 though they lessen its solubility in water. Lime-water, baryta- 

 water, and acetate of lead produce no precipitates. Iodide of 

 potassium forms with D. beautiful crystals of a double salt. With 

 fuming hydroiodic and hydrochloric acids, D. separates into 

 methyl compounds and a substance polymeric with glucose (Dam- 

 bose^iCe He Oe ). Dambose is not fermentable and does not 

 i-educe the alkaline cojDper solution.] 



Danimara Rcsill. {a) Indian, from Dammai'a orientalis, is pale- 

 yellow, clear and transpai'ent, sometimes with a white powder on 

 the surface; it breaks easily with a concheous, shining fractux-e; 

 almost without smell and taste, fuses at 73° (according to other 

 experiments at 150°), dissolves in alcohol and ether only partially, 



