298 Intelligence and Miscellaneous Articles. 



carbonate of lime, while an equal volume at 32° dissolved only 

 0-00070. 



This decided difference proves then that tlie solubility of carbonate 

 of lime in water impregnated with carbonic acid, varies with the tem- 

 perature, at least within the limits of 32° and 50° F., which were 

 those at which the experiments were made. — Joiirn. de Ch. MM., 

 Fevrier 1847. 



SOLUBILITY OF PHOSPHATE OF LIME IN WATER SATURATED 

 WITH CARBONIC ACID. BY M. LASSAIGNE. 

 The solution of carbonic acid employed in these experiments was 

 saturated at the temperature of 50° F., and at a pressure of 29-9 

 inches ; the phosphate employed was left in the solution in each case 

 during twelve hours ; and the quantity dissolved was ascertained by 

 evaporating the same volume of each solution to dryness and weigh- 

 ing the residue. 



1 . Pure phosphate of lime, obtained by the double decomposition 

 of a calcareous salt and alkaline phosphate ; the solubility was 

 0-000750. 



2. Fresh bone, a piece of nearly two inches long, -jAiijdths of an 

 inch wide, and j-^^dths thick ; solubility 0-000166. 



3. Bone disinterred (liter about twenty years' repose in a cemetery, 

 the subsoil of which was sandy; solubility OOOOoOO. 



M. Lassaigne remarks that these facts confirm an opinion advanced 

 by M. Dumas, that bones which have suffered incipient decomposi- 

 tion in the earth, and which have consequently become less coherent, 

 yield a larger quantity of their calcareous salts to water saturated 

 with carbonic acid, than fresh bones containing all their organic 

 matter. — Journ de Ch. Med., Janvier 1847. 



CRYSTALLIZED BILE. 



M. Verdeil effects the crystallization of bile by the following pro- 

 cess : — Fresh ox-bile is to be dried by the water-bath, and the residue 

 is to be treated with about twenty parts of absolute alcohol. By this 

 the mucus remains insoluble, whilst the bilate of soda readily dis- 

 solves. The solution is to be filtered and treated with animal char- 

 coal to decolorize it; tether is then to be cautiously added to it 

 until it begins to turn milky, and is then to remain in a closed ves- 

 sel. Crystallization occurs after some time : the bilate is then de- 

 posited on the sides of the vessel in the form of small acicular cry- 

 stals in concentric groups. In twenty-four hours the liquor is to be 

 poured off; and the crystals, after being washed with aether free 

 from alcohol, are to be dried over sulphuric acid. 



The crystals thus obtained always contain a little common salt ; 

 from this they are freed by ))lacing them with absolute alcohol in a 

 freezing mixture : this salt does not dissolve under these circum« 

 stances. 



Pure bilate of soda dried at 212° F. yielded by analysis — 



