CONTENTS OF VOL. XVI. FOURTH SERIES. Vll 



page 

 Mr. S. Bate on a Fossil Crustacean found in the Magne- 



sian Limestone of Durham 397 



Mr. J. W. Salter on Eurypterus 397 



Mr. C. Gould on a New Fossil Crustacean from the Lower 



Greensand of Atherfield 398 



On the Relations between the Tensions and Temperatures of 



Vapours, by J. A. Groshans 398 



On Intermittent Fluorescence, by J. Miiller 399 



On the Increase of the Electrical Resistance of the Metals with 

 the Temperature, by R. Clausius 400 



NUMBER CIX.— DECEMBER. 



Archdeacon Pratt on the Figure of the Indian Meridian 401 



Prof. Pliicker on the Electrical Discharge through Rarefied 



Gases (^continued) • 408 



Prof. Potter on the Properties of Compound Double-refracting 



Rhombs 419 



Dr. Genth's Contributions to Metallurgy 420 



Mr. W. R. Grove on the Influence of Light on the Polarized 



Electrode 426 



Dr. Atkinson on Monoacetate of Glycol, and on the Prepara- 

 tion of Glycol 433 



Dr. H. Debus on the Action of Caustic Potash on Glycerate of 



Potash 438 



Mr. G. Gore on the Properties of Electro-deposited Antimony. 441 

 Proceedings of the Royal Society : — 



Captain PuUen on Deep-sea Soundings 458 



Mr. A. Claudet on the Stereomonoscope 462 



Prof. W. Thomson on the Stratification of Vesicular Ice 



by Pressure 463 



Dr. Hargreave on the Problem of Three Bodies 466 



Proceedings of the Geological Society : — 



The Rev. O. Fisher on some Natural Pits on the Heaths 



of Dorsetshire 473 



Mr. G. W. Ormerod on the occurrence of an Earthquake 

 along the Northern Edge of the Granite of the Dartmoor 



District, on September 28, 1858 473 



Mr. G. W. Ormerod on certain Veins of Granite in the 



Carbonaceous Rocks on the North and East of Dartmoor. 474 

 Mr. N. T. Wetherell on the Structure of some of the Sili- 

 ceous Nodules of the Chalk 474 



Mr. C. W. Stow on some Fossils from South Africa .... 474 

 Dr. Rubidge on some points in the Geology of South Africa. 475 

 The Hon. C. A. Murray on some Mineral Springs at Te- 

 heran, Persia 477 



