104' Drs. Blyth and Hofmann o« Styrole, 



III. 0*2787 grni. of crystals gave 0*1 255 grm. of water. 



IV. The nitrogen was determined by the method of Dumas, 

 by burning the substance in an atmosphere of carbonic acid. 

 0*5088 grm. of crystals gave 48* cub. cent, of moist nitrogen 

 at 19° C. and 327'" barom. 



These numbers correspond to — 



I, 11. III. IV. 



Carbon . . 64*04 64*50 

 Hydrogen . 4*96 5*38 5*00 

 .,,: Nitrogen 10*30 



■When we consider that the method of Dumas always gives 

 an excess of nitrogen, we can from the above numbers deduce 

 the following formula, Cig H^ N O4, giving per cent., — 



Mean of experiments. 



1864*54 100*00 101*00 



According to this formula, which will be further confirmed 

 by the analysis of the bromine and chlorine compounds, the 

 body investigated is analogous to nitrobenzide, which it re- 

 sembles in many respects, and fully deserves the name of 

 nitrostyvole^ proposed by Simon. 



If from this formula we deduce the composition of styrole, 

 it must be expressed by Cjg Hg, and the formation of nitro- 

 styrole is shown in the following manner : — 



C16 H3 + NO5, HO = C,6 H7 N04^+ 2HO. 



Styrole. Nitrostyrole. 



As to the properties of nitrostyrole, we have but little to add 

 to the statements of Simon. This body is particularly charac- 

 terized by its odour, which strongly irritates the eyes to tears, 

 and by the manner in which it affects the skin, -long contact 

 with which produces a painful burning, and finally blisters. 



On distilling a mixture of nitrostyrole and an alcoholic solu- 

 tion of potash, after most of the spirits have passed over, there 

 are obtained red oil-drops, which are not nitr.ostyrole. From 

 want of materials we have not investigated this body : it is 

 probably a compound analogous to the azohenzide of Mit- 

 scherlich. An exact study of this reaction will certainly lead 

 to interesting results, but there will be some difficulty in ob- 

 taining a quantity of substance necessary for such a purpose. 



We further endeavoured to transform nitrostyrole into a 

 base by the action of sulphuret of ammonium. This body 



