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May 29, 1902. 



Sir WILLIAM HUGGINS, K.C.B., D.C.L., 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. " The Minute Structure of Metals and other Plastic Solids." By 

 G. Beilby. Communicated by Sir W. C. Eoberts- Austen, 

 K.C.B., F.E.S. 



II. " The Influence of Varying Amounts of Carbon Dioxide in the 

 Air on the Photosynthetic Process of Leaves and on the 

 Mode of Growth of Plants." By H, T. Brown, F.RS., and 

 F. Escombe, B.Sc, F.L.S. 



III. " On the Influence of an Excess of Carbon Dioxide in the Air on 



the Form and Internal Structure of Plants." By Professor 

 J. B. Farmer, F.B.S., and S. E. Chandler. 



IV. " On the Structure of the Gills of Lamellibranchia." By Dr. W. G. 



Eidewood. Communicated by Professor E. Bay Lankester, 

 F.RS. 



