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C 6 4 ] 



6. CALCARIOUS NITRE. 



Nitrous Acid combined with calcarious 

 Earth. 



Synonymous Names. 



6. CALCARIOUS f prions nitrate. 



NITRE. ) M° ther w r a er of mtre ' 



L Nitrate of lime. 



It is very rarely found in waters ; it, has a 

 bitter difagreeable tafle, with fomething of the 

 tafte of nitre. 



a. By adding the vitriolic acid to water con-, 

 taining this fait, and warming the liquor, a vapour 

 will arife, which may be rendered viable, by 

 placing a ftopper, moiftened with volatile alkali, 

 over the furface of this liquid. Here the vi- 

 triolic acid, combining with the calcarious earth, 

 forms felenite, which, if in any confiderable 

 quantity, will be precipitated and form chryftals. 

 The nitrous acid is detached, and, being volatile, 

 will fly off, and at that time becomes vinble by 

 the vapour of the volatile alkali, as defcribed 

 (page 52). 



b. By the addition of the faccharine acid, 

 the water will immediately become turbid, and 

 a white powder will be depofited at the bot- 

 tom of the veffel. The faccharine acid, in the 

 fame manner, unites with the calcarious earth, 

 and forms calcarious felenite, which, being al- 

 moft infoluble, is precipitated, while the nitrous 

 is detached, and flies off, 



c. A 



