TTYDRoxyLA^ri\r:-^/^9-i)TsrLnToxATES. 15 



5.2 per cent. On tlie assumption that 65 per cent, of the salt 

 decomposed so as to ü;ive nitrogen (]). 13), and 10.7 so as to give 

 nitrous oxide (p. 13), and that IS. 3 per cent, remained unde- 

 composed, the numbers sliould be sulphur as sulphate, 66.68, and 

 as aminesulphonate, 15.01 per cent., nitrogen as aminesulphonate, 

 .30.02, and as free nitrogen and nitrous oxide, 48.30 per cent., of 

 the total. 



In another experiment, in which .9792 salt was heated at 

 120-125° for four hours, the indications of the analysis were that 

 19.9 per cent, of the salt had resisted decomposition and that no 

 nitrous oxide had been formed. The numbers obtained were 

 66.69 per cent, sulphur as sulphate, instead of 66.75 calculated ; 

 and 12.94 sulphur as aminesulphonate, instead of 13.35 calculated. 

 Some of the gas was lost, so that the distribution of the nitrogen 

 could not be sufficiently tested. 



In an experiment, in which the salt was heated at 100° 

 with potassium hydroxide for many hours in a platinum dish with 

 occasional renewal of the water, the sulphur of the sulphate produced 

 amounted to 77.24 per cent, of the total. Decomposition of all 

 the salt with production of nitrogen would give 83.33 par cent. 



Products of Hydrolysis of Hydroxylamine-aß-disulphonates. 



Potassium hydroxylaminetrisulphonate, which for these ex- 

 periments could be substituted for the disulphonate, the product 

 of its hydrolysis, was moistened w^ith dilute sulphuric acid and 

 heated in a vacuum at 100°, in order to effect its hydrolysis and 

 collect the gas evolved. The gas had no action upon ferrous 

 sulphate, and was not appreciably soluble in alcohol. It there- 

 fore contained no nitric oxide and apparently no nitrous oxide. 



