1 9 6 Analyfis of the Air. 



oil in the diftillation of thefe Scones, than 

 from the calculus, part of which oil did 

 arife from the gall, which adhered to and 

 was dried on the furfaces of the ftones ; 

 which oil formed large bubbles, like thofe 

 which arofe in the diftillation of Deers- 

 horn, p. 193. 



A fmall ftone of the gall bladder, which 

 was as big as a Pea, was diffolved in a Li- 

 xivium of Sal Tartar in feven days, which 

 Lixivium will alfo diffolve Tartar; yet it 

 will not diffolve the calculus, which is more 

 firmly united in its parts. 



A quantity of calculus equal to one half 

 of what was diftilled, viz. 115 grains, did, 

 when a cubick inch of fpiric of nitre was 

 poured on it, diffolve in 2 or 3 hours, with 

 a large froth, and generated 48 cubick inches 

 of air, none of- which loft its elafticky, tho' 

 it flood many days in the glafs veflel. (Fig. 

 34.). And a like quantity of Tartar being 

 mixed with fpirit of nitre, was in the fame 

 time diffjlved ; but no elaftick air was gene- 

 rated, notwithstanding Tartar abounds (o 

 much with air. 



Small pieces of Tartar and Calculus were 

 in 12 or 14 days both diffolved by oil of 

 Vitriol y the like pieces of Tartar and Cal- 

 culus 



