104 



May 8, 1856. 

 The LORD WROTTESLEY, President, in the Chair. 



In accordance with the Statutes, the Secretary read the following 

 list of Candidates recommended by the Council for election into the 

 Society : 



John Button Balfour, M.D. 

 Edward W. Binney, Esq. 

 Sir John Bowring. 

 Sir John Fox Burgoyne, Bart. 

 Philip Henry Gosse, Esq. 

 Robert Harkness, Esq. 

 Caesar Henry Hawkins, Esq. 



John Carrick Moore, Esq. 

 Henry Minchin Noad, Esq. 

 Edmund Potter, Esq. 

 Rev. T. Romney Robinson, D.D. 

 Henry Hyde Salter, M.D. 

 Archibald Smith, Esq. 

 Capt.Thomas A. B. Spratt, R.N. 



Manuel John Johnson, Esq. 



The following communications were read : 



I. "On various Phenomena of Refraction through Semi-lenses 

 or Prisms, producing anomalies in the illusion of Stereo- 

 scopic Images." By A. CLAUDET, Esq., F.R.S. Re- 

 ceived April 22, 1856. 



(Abstract.) 



The author having observed that photographic pictures represent- 

 ing flat surfaces, when examined in the refracting stereoscope, have 

 the appearance of concavity, has endeavoured to discover the cause 

 of that phenomenon, and to explain it. 



In order to ascertain if this peculiar effect was attributable to 

 some imperfection in the lenses of the camera obscura which had 

 produced the photographic pictures, or to a property of the stereo- 

 scope itself, he began to test the stereoscope without photographic 



