198 Analyfts of the Air. 
double that quantity of oil of Vitrioly gene- 
rated the firfl: day >' or 6 cubick inches : But 
the following days it abforbed 15 cubick 
inches, and continued many days in that 
ftate. 
Equal quantities of fpirits of TurpentinCy 
and oil of Vitrioly had near the fame effed;^ 
except that it was fooner in an abforbing 
ftate than the other. 
Mr. Geojfroy fhews, that the mixture of 
any vitriolic falts, with inflammable fubftan- 
ces, will yield common Brimftone; and by 
the different compofitions he has made of 
fulphurj and particularly from ^/ 7 of Vitrioly 
and oil of Turpentine % and by the Analyfis 
thereof, when thus prepared, he difeovered 
it to be nothing but vitriolic fait, united with 
the combuftible fubftance. trench Memoirs, 
Anno I704-/* 3 8 i,or 5 ^y'/i?*s Works,Vol.HL 
p, 273. Notes. 
Experiment LXXXIII. 
In February I poured on fix cubick inches 
of powdered Oyfterjhelly an equal quantity 
of common white-wine Vinegar. In 5 or 5 
minutes it generated 17 cubick inches of 
air, 
/ 
