^^O Late Difcoverles in Science. 



informs us that he extra6\ed from it a great deal; he thence 



concludes that thofe fent to Sage were not pure. 



4th, He has ftiown that antimony ftrongly heated by the 



blowpipe inflames fpontaneoufly. 



5thj He has analyfed pulvis Jlercoreus, and extrafted 



from it : 



Mould - . . . . j6- 



Animal matter - - _ _ _ ig* 



Vitriolic fait and calcareous marine fait - 2* 



Calcareous earth - > _ _ g^* 



Divided quartz - - _ - la* 



Iron - - _ > - « i« 



Lofs 



17- 



6th, The Dutch red precipitate or red oxyd of mercury 

 gave him nearly a third of minium or red oxyd of lead. 



7th, He confiders calcareous earth as a combination of 

 lime with acidum pingne, as Meyer had aflerted before. The 

 alkali, rendered cauftic by lime, contains, according to him, 

 a fixth part of actdum pingue. A hundred grains of this 

 acid, faturated with the phlogifton of charcoal, produce 120 

 cubic inches of inflammable air. Scheele alio extra<Sled 

 inflammable air from cauftic alkali. 



8th, He has examined a kind of argil near Mans, which 

 he confiders as a decompofition of feld-fpar. 



9th, In examining what took place when the Odeon was 

 burnt, he has Ihown, that in all conflagrations there is dif- 

 engaged a great deal of inflammable air which fills the build- 

 ing on fire. This air does not inflame as long as it is kept 

 from coming into contaft with the external air, but as foon 

 as the latter penetrates to the interior of the building the in- 

 flammation becomes general ; which makes people errone- 

 outly conclude that the building has caught fire in different 

 places. He found on this occafion a great deal of fulphur, 

 which he confiders as a produft of the decotnpofitiou of the 

 plafter. 



loth. He has examined the calcareous ludi of Dauphiny, 

 In their fiffures they contain beautiful cryfi.als of quartz. 

 [To be continued.] 



XII. De> 



