Imidosulphonates. 



(Second paper) 



by 

 Edward Divers, M.D., F.R.S., Prof. 



and 



Tamemasa Haga, F.C.S., Rigakuhakushi, late Asst. Prof., 



College of Science, Imperial University. 



This communication is supplementary to that which ap- 

 peared in this Journal, vol. 6 in 1893. It contains an account of 

 some imidosulphonates, not there described, and a collation of our 

 results with those obtained by Berglund, called for by the existence of 

 .some radical differences between them. It was this chemist, now 

 deceased, who first made known the existence of imidosulphonates, 

 although several of them had been already obtained and described by 

 others under various names and formulai. His important memoir on 

 these salts was published in Swedish, but summaries of it by Clève 

 and by himself respectively, appeared in the Journals of the French 

 and German Chemical Societies. References to all are given in our 

 first paper. In English also a good summary was published by Watts 

 in the ;?//</. Suppl. of his Dictionary. This had escaped our notice and 

 up to the time of publishing our first paper we had only seen the 

 account in the Berichte and an appreciative notice of the Swedish 

 paper in R.isehig's paper on Fivmy's sulphazotised salts. But soon 

 after that, Dr. Raschig spontaneously sent us, with the greatest kind- 

 ness, his own copies of Berglund's Swedish papers on Imidosulphonates 



