ME. CHAELES TOMLINSON ON SUPEESATUEATED SALINE SOLUTIONS. 673 
II. Salts of which the supersaturated solutions suddenly solidify at low temperatures. 
Examples : — Sodic carbonate. 
Sodic phosphate. 
Plumbic acetate. 
Sodic hyposulphite. 
Strontic chloride. 
III. Salts of which the supersaturated solutions deposit their excess of salt at low 
temperatures, or under the action of a nucleus, leaving the mother-liquor saturated. 
Examples : — Zincic acetate. 
Cupric sulphate. 
Baric chloride. 
Potassic arseniate. 
Antimonio-potassic tartrate. 
Citric acid. 
IV. Salts of which the supersaturated solutions form modified salts of a lower degree 
of hydration. 
Examples : — Sodic sulphate. 
Zincic sulphate. 
Magnesic sulphate. 
Ammonium phosphate. 
It will be seen that the sodic sulphate and the magnesic sulphate also occupy a place 
in Class I. 
V. Anhydrous salts that do not form supersaturated solutions: — 
Potassic nitrate. 
Potassic bichromate. 
Sal-ammoniac. 
Sodic nitrate. 
Potassic chlorate. 
Potassic ferrocyanide. 
Baric nitrate. 
Plumbic nitrate. 
Ammonium nitrate. 
