Chemical Notices. 8^ 



Vauquelln has repeated the analyfcs : he finds 

 Akimine - - 21 



Soda - - - 33 



Fluoric acid and water - 47 



100 

 Upon a careful examination of the aluminc he thinks it con- 

 tains 5 of (ilex. 



Klaproth has alfo difcovcred a native phofphate of copper j 

 and is at prcfent employed ui analyliug this new couibinaliun 

 of the phoiphoric acid. 



CHEMICAL NOTICES. 



Some experiments made by ^ir, Carlifle prove that ful- 

 phurated hydroijen gas is not evolved from eggs unlcia their 

 are healed in water, and this by the deconipolitioo of the, 

 water uied. 



A perfon in the colour line, on the continent, havinc; mixed 

 coarfe Fruflian blue and nut oil for a bkie colour, covered, 

 them with water, and left them til! wanted. On going to 

 ufe it, he found it changed to white: thinking it re^^uired 

 more Pruffian blue, he fpread it upon a (tone, when the co- 

 lour came again of itfelf: he then covered it with oil inliead 

 of water, but with no better fuccefs. As an experiment, 

 fome was laid on white paper, fome on wood, and fome on 

 a wall. That on the white paper was ihc la(t that returned 

 to the blue colour; but they all became a (Irong blue. 



Phofphorus expofed in hydrogen gas is didolved in propor- 

 tion to the teniperature. If this is don^ in a light place, the 

 pho(phorus will fublime on the infule of the glafs. If the glals 

 l)e darkened in parts where the light cannot enter, tlie phof- 

 phorus will not have fublimed. This adhclion to the (ides 

 of the glalTes never takes place but when light is prefent. 



Mr. CruiekOiank has publi(hed a kcond paper on the. 

 gafeous oxide of carbon, in which he propofes a method of 

 analyling thefe gafes by the oxymuriatic aeid gas, which 

 abforbs and decoinpoles the hydrogen and 'the hydro-car- 

 bonate, leaving the galeous oxide. In this cafe, not more 

 than a double quantity of the oxygenated muriatic acid gas 

 fliould be ufcd. The galeous oxide itl'clf may alfo be decoui- 

 poied by the oxygenated muriatic acid gas, provided a iui- 

 ticient quantity be expofed to its ailion. Hydrocarbonale 

 or hydrogen may be imniedialelv decomijofed by the action 

 gf oxymuriatic gas and the electric (park ; but the aafeous 

 cxide of carbon and oxymuriatic acid gas are not fired by 

 Uie elciSlric fpark. 



Mr. 



