PEOCEEDINGS OF 



THE ROYAL SOCIETY. 



VOL. LXV. 



No. 422. 



CONTENTS. 



Meeting of November 16, and List of Papers read 



PAGE 



432 



Note on the Electromotive Force of the Organ Shock and the Electrical 

 Resistance of the Organ in Malapterurus electricus. By Feancis Gotch, 

 M.A., F.R.S., and G. J. Burgh, M.A. Oxon 434 



On the Formation of' the Pelvic Plexus, with especial Reference to the 

 Nervus Collector, in the Genus Mustelus. By R. C. Punnett, B.A., 

 Scholar of Gonville and Caius College, Cambridge. Communicated by 



On the Least Potential Difference required to produce Discharge through 

 various Gases. By the Hon. R. J. Steutt, B.A., Scholar of Trinity 

 College, Cambridge. Communicated by Lord Rayleigh, F.R.S. . . 446 



Meeting of November 23, 1899, and List of Officers and Council nominated for 



Note on the Spectrum of Silicium. By Sir Norman Lockyer, K.C.B., F.R.S. 449 



Preliminary Table of Wave-lerigths of Enhanced Lines. By Sir Norman 



Lockyer, K.C.B., F.R.S 452 



The Colour-Physiology of Ilipjpolyte various. By F. W. Keeble, Caius 

 College, Cambridge, and F. W. Gamble, Owens College, Manchester. 

 Communicated by Professor S. J. Hickson, F.R.S 461 



An Experimental Research on some Standards of Light. By J. E. Petavel. 



Communicated by Lord Rayleigh, F.R.S 469 



Hans Gadow, F.R.S, 



445 



election 



448 



List of Papers read . 



449 



Price Two Shillings and Sixpence, 



January 19, 1900. 



