264 TABLES FOR REFERENCE. 



IV. Salts of alkali-metals with one atom of alkali in the 



molecule ; e.g., Potassium or sodium nitrate, chloride, 



acetate, etc. 3. 

 V. Salts of alkali-metals with two atoms of alkali in the 



molecule ; e.g., Potassium sulphate, oxalate, tartrate, 



malate, etc. 4. 

 VI. Salts of alkali-metals with three atoms of alkali in the 



molecule ; e.g., Potassium citrate. 5. 



Thus a solution of cane-sugar has -f the water-attracting 

 power of one of saltpeter of the same strength ; and a solu- 

 tion of sugar must be f as strong as one of saltpeter to pro- 

 duce the same osmotic effects. 



