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November 20, 1856. 



Dr. MILLER, V.P., in the Chair. 



In accordance with the Statutes, notice was given of the ensuing 

 Anniversary Meeting for the election of Council and Officers. 



Edward William Binney, Esq., and Csesar Henry Hawkins, Esq., 

 were admitted into the Society. 



Wilhelm Karl Haidinger and Antonio Secchi were balloted for 

 and elected Foreign Members of the Society. 



The following communications were read: 



I. " Experimental Researches on the Organ of Vision. Part I. 

 Microscopic Examination of the Circulation of the Blood 

 in the Vessels of the Iris and of the Choroid Membrane, 

 &c." By AUGUSTUS WALLER, M.D., F.R.S. Received 

 July 10, 1856. 



(Abstract.) 



In a former paper on the section of the optic nerve, the author de- 

 scribed a process of producing temporary extrusion of the eyeball from 

 the socket in the living animal. Although adopted in the first instance 

 merely for the purpose of dividing the optic nerve de visu with as 

 little injury as possible, the same means of exposing the eyeball may be 

 advantageously employed for studying various other points relating to 

 the physiology of the eye. In the first place, as the eyeball is so much 

 protruded from the orbit, Kepler's experiment on the eye removed 

 from the body, showing that external objects form inverted images 

 on the retina, may be performed on the living animal. For this purpose 

 it is merely requisite to place a bright object obliquely before the 

 pupil, a candle for instance, in order to ascertain that a reversed image 

 of it is formed on the opposite side of the eye. On a young rabbit 



VOL. VIII. U 



