373 



December 8, 1853. 

 COLONEL EDWARD SABINE, R.A., V.P. & Treas., in the Chair. 



The Chairman stated to the Meeting that the President had 

 appointed the following gentlemen Vice-Presidents : — 



Colonel Edward Sabine : Thomas Bell, Esq. ; Thomas Graham, 

 Esq. ; Sir Frederick Pollock, M.A. ; the Rev. Baden Powell, M.A.; 

 Charles Wheatstone, Esq. 



A paper was read, entitled " On some of the Products of the 

 Decomposition of Nitrotoluylic Acid." By Henry M. Noad, Ph.D., 

 Lecturer on Chemistry at St. George's Hospital. Communicated 

 by A. Hoffmann, Ph.D., F.R.S. Received Nov. 17, 1853. 



The author refers to a former memoir in which he described the 

 mode of preparation and properties of two new organic acids, the 

 analogues of benzoic and nitrobenzoic acids in the toluyl or im- 

 mediately succeeding series, and to which the names of toluylic 

 (C,g Hg O44) and nitrotoluylic (C^^ H^ (NO4) O4) acids were con- 

 sequently given. 



In the present paper he resumes the study of the action of nitric 

 acid on cymol (C^o H14), and describes first some unsuccessful 

 attempts to procure from that oil the substitution compound 



C20 I j- , from which, by the action of reducing agents, he had 



hoped to procure a new organic base homologous with aniline, 

 toluidine, &c. He then investigates the products of the decompo- 

 sition of his new nitrogen acid. He describes the preparation and 



properties of nitrotoluylamide ^is^^q ^ ^4> NHg, and having 



succeeded, though by a rather tedious process, in obtaining this 

 substance in some quantity, he studies the action of reducing agents 

 on it. By the action of hydrosulphate of ammonia upon an aqueous 

 solution of the amide, a crystalline substance was procured, which 

 analysis proved to be homologous with the carbamide — carhanilide of 

 Hofmann, and with the anilo-urea of Chancel. The study of its 

 properties showed that it must be considered as the analogue of the 

 latter, that it is the true urea of the toluyl series, being a well- 

 defined organic base, forming a series of crystalline salts, of which 

 the nitrate and oxalate were qualitatively examined. A synoptical 

 view of these ureas is given, showing their relation with the urea 



By the action of a boiling solution of caustic potash on toluyl urea 

 (Cg H3 (Ci4 H7) N2 O2), a new acid was procured, the analysis of 

 which showed that it has three homologues in the benzoyl series, 

 viz. anthranilic acid, henzamic acid, and carbanilic acid, all of which 

 are represented by the formula C14H7NO4, the composition of the 

 new acid being expressed by the formula (C,6H9N04). 



The limited quantity of this acid at the author's disposal, and the 

 great difi&culty with which it was procured, did not enable him to decide 

 positively with which of the above acids it corresponds, though its 



Proceedings OF THE Royal Society. Vol. VI. No. 101. 27 



