542 



Dr. J. Stenhouse on Parasulphide of [June 16, 



Both furfuraniline and furfurtoluidine resemble rosaniline in giving 

 beautifully coloured salts, whilst the bases are nearly colourless, or of a 

 pale brown colour. 



Fiirfurnaphthylamine. — When an alcoholic solution of furfurol was added 

 to a similar solution of naphthylamine it immediately became of a red 

 colour, which is as fugitive as the one obtained from aniline, but much 

 duller. Several attempts were made to prepare crystalline salts of this 

 compound, but without success, only dark-coloured resinous substances 

 being obtained. 



Several other typical bases were also tried, but without any results. 

 These were quinidine, coniine, sparteine, and theine. It appears, there- 

 fore, from these experiments, that it is only the bases of the aromatic series 

 which combine with furfurol to yield these peculiar-coloured salts in a 

 crystalline state. 



I cannot conclude this paper without acknowledging the very efficient 

 aid I have received from my assistant, Mr. Charles Edward Groves, in the 

 preceding investigation. 



IX. "On Parasulphide of Phenyl and Parasulphobenzine." By 

 John Stenhouse, LL.D., F.R.S., &c. Received May 27, 1870. 



CHI 



When sulphide of phenyl, q 6 |j 5 \ S, was passed several times in succession 



through an iron tube filled with nails and heated to low redness, a consi- 

 derable amount of carbonaceous matter was deposited, and a portion of the 

 sulphide was converted into an isomeric compound, which I propose to call 

 Parasulphide of Phenyl. 



In order to obtain this substance from the dark-coloured distillate 

 which collected in the receiver when sulphide of phenyl was submitted to 

 the action of heat in the manner above described, it was transferred to a 

 copper retort and distilled. The clear dark -yellow oil was then cooled for 

 several hours in a freezing-mixture, when a considerable quantity of a white 

 crystalline substance separated in nodules ; this is freed from undecom- 

 posed sulphide of phenyl by thoroughly draining it on a vacuum filter. 

 It can readily be purified by repeated crystallization from boiling alcohol, 

 in which it is rather soluble. 



I. * 1 97 grm. substance gave '557 grm. carbonic anhydride and *092 

 grm. water. 



II. '166 grm. substance gave '473 grm. carbonic anhydride and *077 

 grm. water. 



III. *200 grm. substance gave '254 grm. barium sulphate. 



IV. *218grm. substance gave '276 grm. barium sulphate. 



