Intelligence and Miscellmieous Articles. 395 



SALTS OF RHODIUM AND OXIDES OF PALLADIUM. 



The following analyses are from a paper by Berzelius, contained 

 in the Annates de Chimie et de Physique, The results of his ana- 

 lyses, simply are given without his views of their atomic constitu- 

 tion. 



Chloride of Sodium and Rhodium : 



Chloride of Sodium ^5'55 



Chlorine 27-48 



Rhodium 26-97 



100-00 

 Hydrate of Rhodium : 



Rhodium 75-9 



Oxygen 17-5 



"Water 66 



100-0 

 Protoxide of Palladium : 



Palladium 86-94< 



Oxygen 1306 



100-00 

 Peroxide of Palladium : 



Palladium 76-92 



Oxygen 23-08 



100-00 



HYPOSULPHURIC ACID AND HYPOSULPHATES. 

 Dr. Heeren forms the hyposulphuric acid nearly in the mode describ- 

 ed by MM. Gay-Lussac and Welter, excepting that he separates the 

 oxide of manganese by s\ilphuret of barium instead of barytes water. 

 The excess of sulphuret of barium is separated by carbonic acid, heat- 

 ing and filtering : the solution, when sufficiently concentrated and 

 cool, gives perfectly pure crystals of hyposulphate of barytes ; these 

 decomposed by sulphuric acid yield free hyposul|)huric acid. 



Hyposulphate of potash was prepared by decomposing a hot solu- 

 tion of hyposulphate of lime by carbonate of potash. The ciystals are 

 fine, and resemble those of sulphate of potash. One part of this salt 

 is soluble in 1-58 of boiling water, and 26-.5 at 60° Fahr. It is inso- 

 luble in alcohol, has a bitter taste, contains no water of crystallization, 

 and is neither efflorescent nor deliquescent. 



Hyposulphate of soda is in large fine clear quadrangular prisms j 

 they are unalterable in the air, and contain 15-54 per cent of v;ater: 

 this salt is soluble in M part of water at 212°, and 2-1 at the tempe- 

 rature of 60°. It is insoluble in alcohol : its taste peculiar and bitter. 

 Hyposulphate of ammonia is obtained by decomposing hyposul- 

 pliatc of barytes with sulphate of ammonia : it crystallizes with diffi- 

 culty, and the crystals are too small to permit their form to be deter- 

 mined. It is soluble in less than its own weight of water, and insoluble 

 in alcoliol. Its taste is cooling, like that of sulphate of soda ; suffers 

 no alteration by exposure to the air -, but when the temperature is 

 3 E 2 raised. 



