597 



anisamic acids has likewise furnished new bodies, with the study of 

 which I am at present engaged. 



Action of Nitrous Acid on Phenylamine and Nitrophenylamine. 



Phenylamine, when submitted to the modified nitrous acid-process, 

 is transformed into a fusible body containing 



C 24 H U N 3) 



which is insoluble in water and easily soluble in alcohol. This com- 

 pound, which possesses feebly basic characters, is formed according 

 to the equation 



C 24 H u N 2 + N0 3 = 3HO 4- C 24 H u N 3 . 



2 equivs. of New com- 



Phenylamine. pound. 



Nitrophenylamine (the alpha-variety which is formed by the action 

 of reducing agents upon dinitrobenzol), similarly treated, furnishes a 

 compound crystallizing in beautifully red needles 



C M H 9 N S 9 



the formation of which is represented by the equation 

 C 24 H 12 N 4 8 + N0 3 = 3HO + C 24 H 9 N 6 O 8 , 



2 equivs. of Nitro- New com- 



phenylamine. pound. 



Treated with concentrated hydrochloric acid, the new compound re- 

 produces nitrophenylamine. The action of chlorine and bromine 

 upon it gives rise to the formation of new crystallized derivatives. 



VI. "On the Influence of the Ocean on the Plumb-line in 

 India." By the Rev. J. H. PRATT, Archdeacon of Cal- 

 cutta. Communicated by Professor STOKES, Sec. R.S. 

 Received December 7, 1858. 



(Abstract.) 



This paper is a sequel to two former communications made to 

 the Royal Society by the author. In the first of these (communi- 

 cated in 1855), the deflection of the plumb-line caused by the mountain- 

 mass north of Hindostan is calculated ; and in the second (communi- 

 cated in 1858), the effect of a small excess or defect of density pre- 



2 s 2 



