460 ANALYSIS OF THE 



was re-dissolved in distilled water. There remained undissol- 

 ved a portion, which, when thoroughly dried, weighed 2.5 

 grains. This suffered a very slight effervescence with muria- 

 tic acid, similar to that excited in the insoluble matter of the 

 water of the North Spring ; a similar thin crust, too, had form- 

 ed on the sides of the glass capsule, which was removed with 

 effervescence by a drop of muriatic acid. The relative propor- 

 tions, therefore, of sulphate and carbonate of lime may be re- 

 garded as the same : and the insoluble residue will thus consist 

 of 0.3 of carbonate, and 2.3 of sulphate of lime* By precipi- 

 tation by muriate of barytes from another pint of the water, si- 

 milar results were obtained. 



To the clear liquor, oxalate of ammonia was added as long 

 as it produced any turbid appearance. The precipitate collected 

 and dried, being converted by calcination into carbonate of 

 lime, afforded, when acted on by muriatic acid, 16 grains of dry 

 muriate of lime. 



The solution poured off from the precipitate, was evapo- 

 rated to dryness, and the dry mass was exposed to a heat gra- 

 dually raised to redness, until it ceased to exhale any vapour. 

 The muriate of ammonia formed by the action of the oxa- 

 late of ammonia on the muriate of lime, was thus expelled, 

 and the muriate of soda of the water remained. It weighed 

 22.5 grains. 



The results, then, by this method, are from a pint of the 

 water, 



Muriate of soda, 



22.5 grains. 



Muriate of lime, 



16 



Sulphate of lime, 



2.3 



Carbonate of lime, - 



0.3 



Oxide of iron, 



0.15 



41.25 



The 



