PROCEEDINGS 



OF 



THE ROYAL IRISH ACADEMY. 



1837. No. 3. 



February 13. 



Rev. F. SADLEIR, D. D., F.T. CD., Vice-President, 

 in the Chair. 



Rev. Thomas Knox, George J. Knox, Esq., and Andrew 

 S. Hart, Esq., F. T. C. D., were elected members of the 

 Academy. 



Doctor Gregory read a paper, entitled, " Examination 

 of Eblanine, a substance discovered by Mr. Scanlan, and 

 exhibited by him at the Meeting of the British Association." 

 By Professor Apjohn and Dr. Gregory. 



Eblanine is contained in pyroxilic spirit. It is yellow, 

 crystalline, fusible at 318°, volatile in a currentof air at300°, 

 not subliming in a close tube unchanged. It is insoluble in 

 water and alkalies, soluble with a strong yellow colour in 

 alcohol, ether, and concentrated acetic acid. Strong sul- 

 phuric acid strikes with it a deep bluish purple colour, soon 

 passing to brownish black. Strong muriatic acid dissolves 

 it sparingly with a very fine and intense purplish red colour, 

 which also slowly passes into brownish black. Nitric acid 

 dissolves it, and from the solution water separates a yellow 

 solid, which, at a certain temperature, is decomposed sud- 

 denly with a very feeble explosion. Chlorine converts it 

 into a dark resinous matter. 



