Intelligence and Miscellaneous Articles. 231 



but no analysis indicated the existence of the compound 380^, 

 5Sb'-03, which, according to Berzelius, would be the neutral sul- 

 phate of antimony. 



On treating the above-described salts with hot water, a subsalt is 

 obtained, the composition of which is represented by the formula — 



Calculation. Experiments. 



2Sb2 0' 3824 88-4 88-6 



S03 '.. 500 11-6 11-4 



4324 100-0 100-0 



The analysis of two other specimens is correctly represented by 

 the formula 2Sb2 O^, SO^, 2H0. 



Nitrate of Antimony. — This salt was obtained in the form of pearly 

 crystals by dissolving the oxide in cold fuming nitric acid, and adding 

 water to the solution. Its composition is 2Sb- O^, NO*. 



Oxychlorides of Antimony. — Powder of Algaroth was prepared by 

 treating chloride of antimony with cold water. After some days the 

 mass became crystalline ; when well- washed its composition agreed 

 with the analyses which have served to fix the formula of this com- 

 pound. This formula is more simply replaced by CI Sb- 0'^ 



When the sesquichloride of antimony, or rather the sesquioxide 

 dissolved in a great excess of hydrochloric acid, is treated with hot 

 water, another oxychloride is obtained, which, on the cooling of the 

 liquor, precipitates in dense brilliant crystals. Its composition is 

 represented by the following formula : — 



Calculation. Experiments. 



CI 443 10-6 11-1 11-4 



4Sb 3224 77-3 76-5 76-8 



O' 500 12-1 



4167 100-0 



This compound consequently must here presented by the formula, 

 ClSb^O'^ + Sb^Os. 



Tartrates of Antimony. — By allowing a syrupy solution of tartrate 

 of antimony, obtained by dissolving the oxide of the metal in tartaric 

 acid, to remain for a long time, large transparent crystals of tartrate 

 of antimony were obtained. The mother- water, after the separation 

 of the crystals, furnished more afterwards by spontaneous evapora- 

 tion. 



This salt is very soluble in water. It is deliquescent in a moist 

 atmosphere. Its composition is represented by the following for- 

 mula : — 



Calculation. Experiments. 



, ^ . 



C'6 1200 19-6 18-9 19-0 



H'G 200 3-2 3-5 3*5 



028 2800 46-0 



Sb«03.... 1912 31-2 31-5 



6112 100-0 

 At 320° F. this salt lost 23-1 per cent, of water. 



