450 C. L. Jackson — Waste-product in the Aniline Manufacture. 



At the beginning of the next year, T. Carnelly* described a 

 base C, 3 H, ,JS"H 2 formed by the reduction of mononitrotolyl- 

 phenyl made synthetically, but as he did not describe»eitber 

 the acet-compound or the platinum salt there were no data for 

 a comparison of his base with mine ; to furnish such data is 

 the object of the present paper. Carnelly found that, on addi- 

 tion of sodic hydrate to a salt of his base and extraction with 

 ether, on evaporating the ether "an oily body was first pro- 

 duced from which there separated out a small quantity of 

 needle-shaped tufts. The melting-point of these after careful 

 drying was found to be 93°-97°.'' Under the same conditions 

 my base also furnished an oil, but at the time of the investiga- 

 tion in Berlin I observed no crystals. In the hope that longer 

 standing would cause it to solidify I have since the publication 

 of Carnelly's paper, precipitated the small quantity of the salts 

 of my base still at my disposal with sodic hydrate and allowed 

 the brown oil thus obtained to . stand under a bell-jar ; after 

 several days crystals appeared, and in a few weeks it had 

 changed nearly completely into good-sized prismatic crystals 

 arranged in pennate groups which broke up on pressure into 

 rough octahedral masses. Freed by means of filter-paper from a 

 little adhering brown oil these crystals melted at 46°-70° ; from 

 an ethereal solution the substance separated as a brown oil 

 solidifying on stirring to pennate plates with the same melting- 

 point as before recrystallization. The crystals were insoluble 

 in water, freely soluble in alcohol, ether and benzol, and in- 

 stantly converted by hydrochloric acid into a chloride which 

 dissolved easily in water and was obtained crystallized in white 

 flattened needles two and a half centimeters "long me 

 partial decomposition near 200°, whereas Carnelly's crystalline 

 base when heated with hydrochloric u--M "di — 'lvod only atrrr 

 Jong boiling; on cooling, small fine white silky needles were 

 deposited, which were separated 'from the mother- liquor, washed 

 with a little water and dried over lime, after which they were 

 found to melt, with blackening, at 280° to 283°." 



From this comparison it is evident that the base described 

 by Carnelly is not. identical but isomeric with that obtained by 

 me, and this view is further confirmed by the fact that the 

 fan-shaped crystal-groups of the platinum salt of my base 

 were so characteristic that Carnelly would have certainly de- 

 cern had his platinum salt appeared in this form. 



Finally, it is worth mentioning that in 1875 I had, as an- 

 nounced at the end of my first paper, attempted to prepare 

 synthetically a base with this for: ■:■ the publi- 



cation of Carnelly's paper, as my method was different from his, 

 I determined to bring the experiments for which I had pro- 



