Proceedings. 63 



March 17, 1898. 

 The LORD LISTER, F.R.C.S., D.C.L., President, in the Chair. 



Professor Wilhelm Pfeffer, who was elected a Foreign Member in 

 1897, was admitted into the Society. 



The CROONIAN LECTURE, " The Nature and Significance of Func- 

 tional Metabolism in the Plant " (Das Wesen und die Bedeutung des 

 Betriebsstnffwechsels in der Pflanze), was delivered by Professor W. 

 Pfeffer, For. Mem. R.S., of the University of Leipzig. 



The following Papers were read : 



" On the Intimate Structure of Crystals. Part III. Crystals of the 

 Cubic System with Cubic Cleavage. Part IV. Cubic Crystals 

 with Octahedral Cleavage." By Professor SOLLAS, F.R.S. 



March 24, 1898. 



SIR JOHN EVANS, K.C.B., D.C.L., Treasurer and Vice-President, 



in the Chair. 



The Right Hon. Sir Herbert Eustace Maxwell, a Member of Her 

 Majesty's Most Honourable Privy Council, was admitted into the 

 Society. 



The BAKERIAN LECTURE, " Further Experiments on the Action 

 exerted by certain Metals and other Bodies on a Photographic Plate," 

 was delivered by Dr. W. J. RUSSELL, V.P.R.S. 



The following Paper was read : 



" A Photographic Investigation of the Absorption Spectra of Chloro- 

 phyll and its Derivatives in the Violet and Ultra-violet Region 

 of the Spectrum." By C. A. SCHUNCK. Communicated by Dr. 

 E. SCHUNCK. F.R.S. 



VOL LXI11. 



