[ MS ] 



mel. Hence we fee this ftone may be advantageoufly fubfti- 

 tuted for lime in pottery and vitrification, and, in metallurgy, 

 as a flux for certain refradory ores. 



Water poured on Strontliian lime heats more violently than 

 with the fame proportion of common lime ; it alfo diffolves it 

 much more copioufly, 200 parts of vs^ater diffolving one of 

 this lime, or rather more ; for a troy pound of water, tempe- 

 rature 60°, dijQTolves ^6 grs. of this lime. 



The mofl: remarkable property of this lime is that it is 

 capable of cryftallizing ; a faturate folution of it, being fuffered 

 to ftand for one day in a cool place, fliot into tranfparent 

 rhomboidal cryflals, two of whofe oppofite angles were very- 

 acute, and the other two confequently very obtufe ; thefe cryflals 

 do not readily eiBorefce by expofure to the air of the tempe- 

 rature of 66', but placed on a hot iron they fall into powder 

 which is ftill in the flate of lime ; the water deprived of them 

 forms a pellicle on the furface like common lime-water ; the 

 cryflals themfelves are alfo foluble with the afTiflance of heat. 



The lime-water has a flronger tafhe, though of the fame 

 kind as that of the common ; like this, it precipitates metallic 

 fblutions, and particularly that of fublimate corrofive with the 

 fame colour, but much more copioufly than the common. 



It is a much better tefl of fixed air than common lime- 

 water, being precipitated much more abundantly by the fmallefl 

 particle zt that air. 



Water. 



i 



