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Remarks on Mr. Richkrs Calculation of the proportion of Ingredients 



in Neutral Salts. 



Since the publication of my laft paper Mr. Richter, an able 

 German Mathematician and natural philofopher, has publiflied an 

 elaborate treatife on the fame fubjeft, in which infinite labour 

 and great mathematical ingenuity is difplayed ; his conclufions, 

 however, differ confiderably from mine ; leal't this difterence among 

 fo many experiments fhouid fuggcil a doubt concerning the deter- 

 minations J have endeavoured to eftabiifli, I feci my fell obliged to 

 invcftigate the fource of this difterence, and to (hew the inaccura- 

 cy of feveral of his fundamental indudions. 



SeSlion \fi. 



Stochyometry, 2 Theile. 



By his firft experiment, the foundation of feveral of his fubfe- 

 quent conclufions, he endeavours to difcover the real quantity of . 

 calcareous earth in chalk, he found 24CO grains of chalk expofed 

 in an earthen vefiTel to the greateft heat of a wind furnace (how 

 long?) to weigh, when cool, only 1342 grains, therefore 1000 

 grains of this chalk would weigh 559 grains, and this without far- 

 ther proof he takes to be the true quantity of lime contained 

 in it. 



On 



