[ 241 ] 



Nitrated Stronthian. 



loo grains of perfcdly cryftallized nitrated ftronthian, diflblved 

 in 480 of water, were precipitated by about 107 of cryftallized 

 foda, containing 16 per cent, of fixed air and 21,5 of mere alkali, 

 the precipitate, after ignition, weighed 53,25 grains, and contained 

 17,04 of fixed air, and confequently 36,21 of mere earth. — Alfo 

 the 107 grains of foda (at the rate of 21,5 per cent.) contained 

 22,9 of mere alkali, which (at the rate of 135,71 percent.) took up 

 31,07 of real nitrous acid ; then by this experiment 100 grains cry- 

 ftallized nitrated ftronthian contain 36,21 of earth, 31,07 of acid, 

 and 32,72 of water. 



Then 100 grains of pure ftronthian earth take up 86 nearly of 

 real nitrous acid, and fhould afford 276 of cryftallized, or about 92 

 of thoroughly deficcated nitrated ftronthian. 



And 100 grains real nitrous acid fhould take up 1 16,5 of mere 

 ftronthian earth, and afford 321 of cryftallized, or 107 of thorough- 

 ly deficcated nitrated ftron.hian- 



Se&ion ^d. 



Nitrated Lime. 



In my experiment 1 36 grains Carrara marble were faturated by 



400 of nitrous acid, whofe fp. grav. was 1,2754, and which o^nfe- 



VoL. Vil. Hh . quently 



