PEROXYLÀMIXESULPHONATES AND KYDROXYLAMINETRI8ULPHONATE8 |;; 



n>rd. From Expts. 2 and 7, started on portions of the same 

 solution, it seems clear that, with the slow decomposition of the 

 peroxylaminesulphonate which goes on in the cold, instead of the 

 rapid change which occurs àt a" boiling heat, molecular quantities of 

 hydroxylaminedisulphonate and sulphate take the place of some of the 

 hydroxylaminetrisulphonate, and that a little of the hydroxylamine- 

 disulphonate is replaced by its equivalent of sulphate and nitrous 

 oxide. This becomes more obvious when equations in these two 

 cases are given with only 12 molecules instead of 100 molecules of 

 decomposing peroxylaminesulphonate. This is possible without 

 deviating from the numbers found more than the imperfections of 

 the analytical method allow. 



(2). 12(S03K) 4 N 2 2 +6H 2 0=12(S0 3 K)3NO+4(S0 3 K) 2 NÜH+ 

 4SOJŒ + 4XO.H + 2N.X). 



(7). 12(SO 3 K)ÄO 2 +8H 2 O=10(SO 3 K) 3 NO + o(SO 3 K) 2 lSrOH+ 

 8S0 4 KH + 3XOJi + 3X 2 0. 

 The production of small quantities of nitrogen and aminemono- 

 sulphonate is of necessity ignored in the above calculations. 



The author gratefully acknowledges his indebtedness to Dr. 

 Divers. F. R. S., for a thorough revision of his manuscript. 



