. ANAT-YSIS OF SOME AEROLITES. -227 



liquor, which became blue on sapersaturation with ammo- 

 nia. This liquor, evaporated anew, yi^ld^J an apple-green 

 salt, which was heated red hot, to decompose the nitraterof 

 ammonia. The residuum, which was black, was again re- 

 dissolved in nitric acid, and filtered, to separate a blackish 

 matter acquired from the platina crucible. The nitric solu- 

 tion, precipitated by carbonate of soda, yielded a pale green 

 Carbonate of nickel. 



c. The 171 grs of stony powder left by the magnet inThestony 

 experiment a, with the five grains of earthy residuum, were ™^J]^'J^q*^^^^*^ 

 heated in a silver crucible with twice their weight of potash. 

 This mixture became blueish by fusion. Diluted with wa- lixi'rated, 

 ter, the lixivium assumed a greenish hue. The filtered 

 alkaline liquor remained clear when neutralized by nitric 

 acid. The solution was evaporated to dryness, the salt re- 

 dissolved in water without leaving any residuum, and on ad- 

 ding nitrate of mercury nothing but a white precipitate was 

 obtained. This trial, which had been instituted for the de- 

 tection of chrome, did not afford the slightest indication of this 

 metal ; though some have asserted, that it exifts in aerolites. 

 Ht. . d. The powder of the stone having been well lixiviated, anf^ treated 

 •xand treated with muriatic acid, dissolved in it by the assist- ^I'J-j "^^"^^"^ 

 -I^ance of heat. The liquor was evaporated to dryness, and 

 mihe residuum redissolved in water and filtered. The silex, 

 /.««»e II washed and heated redhot, weighed 83*5 grs. 

 fnc 'e. The muriatic solution, freed from silex, was preclpi- Thesolution 

 eatated cold by carbonate of potash. The alkaline liquor, brcarbonafe 

 ''separated from the brown precipitate, was subjected to of potash. 

 ebullition, and mixed with as much carbonate of potash, as 

 was requisite to precipitate it. The precipitate consisted of 

 carbonate of magnesia. 



/. The brown precipitate formed by the carbonate of The predpi- 

 potash in experiment e was boiled with caustic potash. The ^^^^l^^^^^f 

 alkaline liquor, supereaturated with muriatic acid, and then potash, 

 precipitated by carbonate of potash, yielded a white floccu- 

 Jent precipitate; which, after being heated redhot, weighed 

 2*5 grs ; and was found to be akimine, on treating it with 

 sulphuric aoid, 



g. The blown precipitate, which had been treated with Dissolved in 

 potash, was dissolved in nitric acid ; and, after the too great preciptutad by 

 excess of acid had hceti saturated by soda, the liquor was succinate of 

 Q 2 precipi-"""' 



