APPENDIX. 



USEFUL TABLES. 



No. I. 



Equality in the Weight of Cattle, between Swres, Stones, and 

 Hundred- Weights. By the Right Honourable the Lord Somer- 

 vllle. 



No. IF. 



SALTS. BY DR. FORDYCE. 

 Vitriolic acid unites with, 



1. Fixed vegetable alkali, forming vitriolated tartar. 



2. Fixed fossil alkali, forming Glauber's salts. 



3. Calcareous earth, forming selenite. 



4. Magnesia, forming magnesian Glauber's salts. 



5. Clay or earth of alum, forming alum. 

 Nitrous acid unites with, 



1. Fixed vegetable alkali, forming nitre. 



2. Volatile alkali, forming nitrous ainmo 



3. Calcareous earth. 



4. Magnesia. 



^ Muriatic 



