xiv 



March 10, 1904. 



Professor LIVEING, Vice-President, in the Chair. 



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

 ordered for them. 



The following Papers were read : — 



I. "On Electric Resistance Thermometry at the Temperature of 

 Boiling Hydrogen." By Professor J. Dewar, F.K.S. 



II. "A Study of the Badio-activity of certain Minerals and Mineral 

 Waters." By Hon. R. J. Strutt. Communicated by Lord 

 Rayleigh, O.M., F.R.S. 



III. " Some Uses of Cylindrical Lens-Systems." By G. J. Burch, 

 F.R.S. 



