98 Mr. Brett an the Solnhililt/ of certain Metallic Oxides 



4. The prussiate does not appear to undergo solution. 



Nitrate of ammonia acts as a veiy imperfect solvent of the 

 above salts. 



VrotO' salts of Tin. — 1. The oxide appears to be only spar- 

 ingly soluble in the hot as well as cold solution of muriate of 

 ammonia. 



2. The phosphate and prussiate do not appear to dissolve. 



3. The oxalate dissolves readily in a warm solution of mu- 

 riate of ammonia. 



The nitrate of ammonia appears to exert a solvent action 

 only on the oxalate. 



Fey- salts of Tin. — 1. Do not appear to undergo solution 

 readily, if at all, either in the muriate or nitrate of ammonia. 



Salts of Bismuth. — 1. The oxide and carbonate undergo 

 solution in muriate of ammonia. 



2. The phosphate and subnitrate readily dissolve. 



The nitrate of ammonia exerts no appreciable solvent ac- 

 tion over the above bismuthic salts. 



Per-salts of Copper. — 1. The oxide dissolves, as does also 

 the carbonate, forming a fine deep-blue-coloured solution ; if, 

 however, the latter be acid, or heat be applied, a green-co- 

 loured solution of the chloride or subchloride is formed. 



2. The phosphate, oxalate, and prussiate do not dissolve. 



Nitrate of ammonia does not dissolve the last three salts; it 

 dissolves, however, the oxide and carbonate. 



Salts of Manganese, — 1. The oxide readily dissolves even 

 in a cold solution of muriate of ammonia; not so the car- 

 bonate. When the solution of the oxide is heated it is not 

 precipitated. 



2. The phosphate is dissolved in the cold salt, but throws 

 down a portion. 



3. The prussiate is not dissolved. 



The nitrate of ammonia dissolves the oxide in the cold, not 

 so the carbonate. The phosphate is partially dissolved ; heat 

 however, causing it to come down again. 



Salts of Cobalt. — 1. The oxide is dissolved, even in a cold 

 solution of muriate of ammonia, forming a pink solution; if, 

 however the blue and hydra ted oxide of cobalt be heated pre- 

 viously to the addition of muriate of ammonia, so as partially 

 to convert it into a brown colour, the ammoniacal salt does 

 not dissolve the brown portion of oxide. 



2. The carbonate is dissolved even in the cold. 



3. The phosphate undergoes a less perfect solution, and the 

 prussiate does not dissolve. 



If prussiate of potash, which produces a green precipitate 

 in salts of cobalt, be added to a solution of such salts in mu- 



