1862.] 315 



What is the constitution of this diamine ? For the decision of 

 this question I must wait till MM. Col] in and Coblenz have 

 kindly supplied me with a fresh quantity of their queues d 'aniline. 

 As yet I have only ascertained that iodide of ethyl gives rise to the 

 formation of two ethylated bases, viz., 



C 14 H ]8 N 2 =C 13 H 13 (C 2 H 5 )N 2 , 



the composition of which I have fixed by the analysis of the chloride, 

 iodide, and platinum -salt, and 



C 16 H 22 N 2 =C 12 H 12 (C 2 H 5 ) 2 N 2 , 



of which I have only examined the platinum-salt. The saline solu- 

 tions of the ethylated bases are likewise remarkable for their fluores- 

 cent properties. 



Chloride of benzoyl furnishes with paraniline small needles, inso- 

 luble in water but soluble in alcohol, of the formula 

 C 19 H 18 N 2 0=C 12 H 13 (C 7 H S 0)N 2 . 



Paraniline, it cannot be doubted, is the product of the action of 

 heat upon aniline ; and its formation suggests the existence of a series 

 of similar bodies, similarly related to the other ammonias, which the 

 progress of science cannot fail to reveal. 



Experiments made in search of these bodies have hitherto been 

 rewarded only by partial success. Nevertheless I have already suc- 

 ceeded in converting several ammonias into higher bases, and I intend 

 to pursue the direction of research which is indicated by these 

 results. 



V. " Additional Observations on the Proximate Principles of the 



Lichens." By JOHN STENHOTJSE, LL.D., F.R.S. (See 

 p. 263.) 



VI. " Letter to Professor STOKES, Sec.R.S., containing Observa- 

 tions made at Malta on a Planetary Nebula." By WILLIAM 

 LASSELL, F.R.S. (See p. 269.) 



