xii 



May 28, 1903. 



Sir WILLIAM HUGGINS, K.C.B., O.M., President, in the Chair. 



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

 them. 



The following Papers were read : — 



I. " On the Bending of Waves round a Spherical Obstacle." By 

 Lord Eayleigh, O.M., F.E.S. 



II. " Snr la Diffraction des Ondes Electriques, a propos d'un Article 

 de M. Macdonald." By Professor H. Poincare, For. Mem. 

 E.S. 



III. " On the Theory of Eefraction in Gases." By G. W. Walker, 



M.A. Communicated by Professor J. J. Thomson, F.E.S. 



IV. " An Analysis of the Eesults from the Kew Magnetographs on 



Quiet Days during the Eleven Years 1890 to 1900, with a 

 Discussion of certain Phenomena in the Absolute Observa- 

 tions." By Dr. C. Cheee, F.E.S. 



V. " On a Eemarkable Effect produced by the Momentary Eelief of 

 Great Pressure." By J. Y. Buchanan, F.E.S. 



VI. " Evolution of the Colour-pattern and Orthogenetic Variation 

 in certain Mexican Species of Lizards with Adaptation to 

 their Surroundings." By Dr. H. Gadow, F.E.S. 



VII. " Eesearches on Tetanus—Preliminary Communication." By 

 Professor Hans Meyer and Dr. F. Eansom. Communicated 

 by Professor E. H. Starling, F.E.S. 



VIII. " The Hydrolysis of Fats in vitro by Means of Steapsin." By 

 Dr. J. Lewkowitsch and Dr. J. J. E. Macleod. Com- 

 municated by Professor E. Divers, F>E.S. 



IX. " On the Optical Activity of the Nucleic Acid of the Thymus 

 Gland," By Professor A. Gamgee, F.E.S., and Dr. W. 

 Jones. 



