IV CONTENTS OF VOL. V.— FIFTH SERIES. 



Page 



Proceedings of the Geological Society : — 



Mr. W. Shone on the Glacial Deposits of "West Cheshire, 

 together with lists of the Fauna found in the Drift of 



Cheshire and adjoining Counties 72 



Mr. C. Lap worth on the Moffat Series 72 



On the Composition and Industrial Use of the Gases issuing 



from Metallurgic Hearths, by L. Cailletet 75 



On a Pile in which the Attackable Electrode is of Coke, by 



P. Jablochkoff 76 



On the Law of Absorption of Radiations through Bodies, and 

 its Employment in Quantitative Spectral Analysis (Part I.), 



by G. Govi , 78 



Liquefaction of Oxygen 80 



NUMBER XXIX.— FEBRUARY. 



Mr. J. Aitken on some Experiments on Rigidity produced by 



Centrifugal Eorce. (Plates III.-YII.) 81 



Prof. J. Emerson-Reynolds on a New Eorm of Measuring- 

 Apparatus for a Laboratory-Spectroscope 106 



Dr. O. J. Lodge on a Method of measuring the Absolute 



Thermal Conductivity of Crystals and other rare Substances. 110 

 Mr. S. T. Preston on the Application of the Kinetic Theory of 



Gases to Gravitation 117 



Prof. H. F. Weber on Electromagnetic and Calorimetric 

 Absolute Measurements : the Absolute Yalue of Siemens's 

 Unit of Resistance in Electromagnetic Measure ; the Rela- 

 tion between the Current-work and the Heat-evolution in 

 stationary Galvanic Currents ; and the Absolute Yalues of 

 some constant Hydroelectromotive Forces in Electromag- 

 netic Measure 127 



Mr. W. J. Lewis's Cry stall ographic Notes 139 



Prof. J. Emerson-Reynolds on the Rapid Estimation of Urea. 144 

 Notices respecting New Books : — 



Dr. E. Frankland's Experimental Researches in Pure, 



Applied, and Physical Chemistry 153 



Proceedings of the Geological Society : — 



The Rev. R. Abbay on the Building-up of the "White 



Sinter Terraces of Roto-Mahana, New Zealand 156 



Mr. H. Hicks on the Dimetian and Pebidian Rocks of 



Pembrokeshire 157 



Three Experiments with Telephones, by Profesor E. Sacher. . 158 



On the Liquefaction of Hydrogen, by Raoul Pictet 158 



On the Electrical Aftercurrents of transversely Magnetized 

 Iron, by Professor H. Streintz 160 



