﻿Vlll CONTENTS OF VOL. XLI. FOURTH SERIES. 



Page 

 Sir W. Thomson on a Constant Form of Daniell's Battery. 538 

 Messrs. J. C. Gibson and T. Barclay on the Measurement 



of Specific Inductive Capacity of Dielectrics ? 543 



Dr. W. Huggins on a Registering Spectroscope 544 



Proceedings of the Geological Society : — 



Mr. C. J. A. Meyer on Lower Tertiary Deposits recently 



exposed at Portsmouth 546 



Mr. H. Woodward on some new Crustaceans from the 



Lower Eocene of Portsmouth 546 



Mr. W. Whitaker on the Chalk of the Cliffs from Sea- 

 ford to Eastbourne, Sussex, and on the Chalk of the 



southern part of Dorset and Devon 547 



Mr. T. F. Jamieson on the older Metamorphic Rocks and 



Granite of Banffshire , 547 



Mr. J. J. Murphy on the connexion of Volcanic action 



with changes of Level 548 



Don M. de Orueba on the Geology of the neighbourhood 



of Malaga 548 



On the Sensitiveness to Light of the Silver Haloid Compounds, 

 and the connexion of the Optical and the Chemical Absorp- 

 tion of Light, by C. Schultz-Sellack 549 



On the Chemical and Mechanical Changes in Haloid Silver- salts 

 by Light, by C. Schultz-Sellack 550 



Index 553 



PLATES. 



I. Illustrative of Frederick Guthrie's Experiments on Magnetism and 

 Diamagnetism. 



II. Illustrative of M. S. Merz's Paper on a small Universal Stellar Spec- 

 troscope. 



III. IV. Illustrative of Mr. W. R. Birt's Investigations relative to Lunar 

 Activity. 



V. Illustrative of Professor R. Bunsen's Calori metric Researches. 



VI. Illustrative of Professor K. W. Zenger's Paper on the Tangent-balance. 



VII. Illustrative of M. Heim's Paper on Glaciers. 



CORRIGENDA IN VOL. 40. 



Page 437, line 6, for k m -\ read A m +i. 

 — 440, omit the paragraphs on this page of Mr. Moon's paper. 



