394 Profs. A. W. Reinold and A. W. Rucker. [May 4, 



Observations and Reports (continued). 



1888. 4to. London 1892 ; Report of the Conference at 

 Munich. 8vo. London 1893 ; Report of the Meteorological 

 Council. 1892. 8vo. London 1893. The Office. 



Mersey. Report on the Present State of the Navigation of the 

 River Mersey. 1892. 8vo. London 1893. 



The Conservancy Commissioners. 

 Milan : — R. Osservatorio di Brera, Osservazioni Meteorologiche. 

 1891-92. 4to. Milano. The Observatory. 



May 4, 1893. 



The LORD KELVIN", D.C.L., LL.D., President, in the Chair. 



A List of the Presents received was laid on the table, and thanks 

 ordered for them. 



In pursuance of the Statutes, the names of the Candidates recom- 

 mended for election into the Society were read from the Chair as 

 follows : — 



Burnside, Professor William, M.A. 

 Dunstan, Prof essor Wyndham R., 

 M.A. 



Ellis, William, F.R.A.S. 



Ewart, Professor J. Cossar, M.D. 



Gairdner, Professor William 



Tennant, M.D. 

 Hobson, Ernest William, D.Sc. 

 Howorth, Sir Henry Hojle, 



K.C.I.E. 

 Newton, Edwin Tulley, E.G.S. 



Sherrington, Charles Scott, M.B. 

 Stirling, Edward C, M.D. 

 Thorny croft, John Isaac, M.Inst. 

 C.E. 



Trail, Professor James William 



Helenus, M.D. 

 Wallace, Alfred Russel, LL.D. 

 Worthington, Professor Arthur 



Mason, M.A. 

 Young, Professor Sydney, D.Sc. 



The following Papers were read :- 



1. " On the Thickness and Electrical Resistance of Thin Liquid 

 Films." By A. VV. Reinold, M.A., F.R.S., Professor of 

 Physics in the Royal Naval College, Greenwich, and A. W. 

 Rucker, M.A.. F.R.S., Professor of Physics in the Royal 

 College of Science, London. Received March 10, 1893. 



(Abstract.) 



The paper gives an account of experiments made for the purpose 

 of determining the thickness of black soap films formed of solutions 



