C 49 ] 



calcareous earth, its common bafis, it forms a 

 folid fubftance ; whereas the muriatic acid, com- 

 bined with the earth, remains fluid. Vide Fos- 

 ter's tranflation of Scheele's experiments, 

 C. Befides thefe, we may enumerate, 



a. Vinegar, or the acetous acid, which has the 

 general properties of acid falts. 



b. Tartar is a dry faline fubftance, neither fufible 

 nor volatile ; fuffers no change from heat under 

 the boiling point, or 21 2°. It does not readily 

 diflblve in water, nor does it affect the fyrup of 

 violets fo much as the preceding acids. 



C. Sedative fait has the properties of falts in 

 general. We are in great meafure ignorant of 

 its origin. It is chiefly procured from borax, 

 a fubftance that is brought from the Eaft Indies. 

 Sedative fait is generally got in a cryftallized 

 form, refembling mow, or bruifed fperma ceti. 



2. Neutral salts, or fuch as confift of an 

 acid united with an alkaline fait, having the 

 properties of falts in general, There are eigh- 

 teen of thefe falts, which are enumerated in 

 the following table, for which I am indebted 

 to the learned Dr. Black of Edinburgh. 





Vitriolic 

 acid. 



Nitrous 

 acid. 



Muriatic 

 acid. 



Vinegar. 



Tartar. 



Sedative 

 fait. 



Foffil 

 alkali. 



Glauber's 

 fait. 



Cubic 

 nitre. 



Common 

 fait. 





Rochelle 

 fait. 



Borax. 



Vegetable 

 alkali. 



Vitriolr 

 atcd tar- 

 tar. 



Nitre. 



Digeftive 

 fait. 



Regene- 

 rated 

 tartar. 



Tartarifed 

 tartar. 





Volatile 

 alkali. 



Vitriolat. 

 ammoni- 

 ac. 



Nitrous 

 ammoni- 

 ac. 



Sal am- 

 moniac. 



Vegetable 

 ammoni- 

 ac. 







E In 



