121 



Lift'ustriii ) 



V = Syringin. 



Lilaciii 



LilllOIliu = C44 H26 O14. In the seeds of ox'anges and lemons 

 (Citrus Aux-antiiim and C. niedica). Bruise, draw out with cold 

 alcohol and let the sohitions evaporate. — White 2:)0wder, consisting 

 of microscopic crystals; has a strong and pure bitter taste; is not 

 altered at 200°; fuses at 244°; dissolves very little in water, 

 readily in alcohol; very little in ether, in concentrated sulphuric 

 acid with blood-red colour, and percipitable from it by water; not 

 soluble in liquor of ammonia, readily in potash-ley, and precipitable 

 from it by acids. 



Lilioleic Aci(l=C32 H27 O3 +H0. In linseed oil, poppy oil, 

 perhaps also in other di-ying oils. Saponify with soda-ley, salt 

 out, dissolve the soap in much water, precipitate with chloride of 

 calcium, wash, press and treat the lime-soap with ether, which 

 dissolves the Linoleate of lime, biit not the other oleates. The 

 ethereous solution is decomposed with cold hydrochloric acid, the 

 L. acid remaining dissolved in the ether; this solution is decanted 

 and the ether distilled at a temperature as low as possible, in 

 a current of hydrogen gas ; the remnant is dissolved in alcohol and 

 precipitated with ammonia and chloride of baryum ; the precipitate 

 is dissolved in ether and repeatedly x-ecrystallised in ether; the 

 Linoleate of baryta is decomposed by shaking with ether and 

 hydrochloric acid, and the solution evaporated in a vacuum. — 

 Slightly yellowish, thin oil of 0'926 density at 14°, of a highly 

 light-refracting power; tastes at first mild, afterwards acrid; has 

 an acidulous reaction; is still liquid at — 18°; dissolves not in water, 

 readily in ether, less so in alcohol, becomes viscid by keeping at the 

 air; forms with nitrous acid no elaidic acid, but a glutinous resin, 

 suberic acid and very little oxalic acid. Its neutral salts show a 

 great propensity for forming acid salts, they become coloured at 

 the ail- and odorous. 



Linseed Oil. Obtained by pressing the seeds of Linum usitatis- 

 simum. Is yellow, smells and tastes peculiarly, has 0-934 density, 

 does not congeal at — 15°, separates at — 18° a little solid fat, dissolves 

 in 32 parts alcohol of 0-820, in 1.6 parts ether. Forms with 

 alkalies very soft soaps, consists of about nine-tenths linoleate of 

 glyceryl, and one-tenth palmitin. Dries at the air. 



Liriodeildl'ill. Bitter aromatic substance of the bark of the 

 root of Liriodendron tulipifera. Is obtained by extracting with 

 alcohol, evapoi-ating the tincture, washing the impure L. which 

 has separated, with diluted potash-ley, in order to remove resin 

 and dyeing matter; dissolving in alcohol; diluting the solution 

 with water, until it turbifies, and crystallising. — Forms colourless 

 scales, similar to boric acid, or concentrically arranged needles, 



