IV CONTENTS OF VOL. XXXVI. FIFTH SERIES. 



Messrs. P. Lake and Theo. T. Groom on the Llandovery 



and Associated Rocks of the Neighbourhood of Corwen 148 

 Lieut.-General C. A. McMahon's Notes on Dartmoor . . 149 

 Mr. A. J. Jukes-Browne on some Recent Borings through 

 the Lower Cretaceous Strata in East Lincolnshire . . t « 150 

 Some Corrections to a Paper on the Laws of Molecular Force, 



by William Sutherland 150 



On a Remarkable Phenomenon of Oxidation of Pure Alumi- 

 nium when in Contact with Mercury ^ by E. O. Erdmann. . 151 

 On the Processes which take place at the Boundary between 

 two Solutions of Different Concentration when a Current is 

 Passed, by George H. Zahn 151 



NUMBER CCXIX.— AUGUST. 



Mr. Alfred M. Mayer : Studies of the Phenomena of Simul- 

 taneous Contrast-Colour ; and on a Photometer for Measu- 

 ring the Intensities of Lights of different Colours 153 



Mr. Alex. M c Aulay on a Modification of Maxwell's Electrical 

 Theory 175 



Dr. William Pole: Purther Data on Colour-blindness. — 

 No. IV 188 



Mr. J. E. Myers on a new Volumenometer 195 



Prof. G. M. Minchin on the Magnetic Pield close to the Sur- 

 face of a Wire conveying an Electrical Current 201 



Prof. Perry and Mr. H. A. Beeston on Long-Distance Tele- 

 phony „ 222 



Proceedings of the Geological Society : — 



Mr. S. S. Buckman on the Bajocian of the Sherborne 



District 229 



Dr. Andrew Dunlop on Raised Beaches and Rolled 

 Stones at High Levels in Jersey 230 



On the Critical Point, and some Phenomena which accompany 

 it, by G. Zambiasi 230 



The Critical Point, and the Phenomenon of the Disappearance 

 of the Meniscus when a Liquid is heated under Constant 

 Volume, by G. Zambiasi 231 



NUMBER CCXX.— SEPTEMBER, 



Prof. J. G. MacGregor on the Hypotheses of Dynamics .... 233 

 Mr. James Wimshurst on a new Form of Influence-Machine . 264 

 Mr. W. R. Pidgeon on an Influence-Machine 267 



