IV CONTENTS OF VOL. XXXVI. FOURTH SERIES. 



Page 

 Prof. R. Harkness and Dr. H. A. Nicholson on the Coniston 



Group 72 



Dr. A. L. Adams on the Death of Fishes on the coast of the 



Bay of Fundy 72 



Mr. R. Atkins on Volcanoes in the New Hebrides and 



Banks Islands 72 



Mr. W. H. Flower on Thylacoleo carnifex 73 



Mr. E. Hull on the Carboniferous district of Lancashire 



and Yorkshire 74 



On the Spectrum of Brorsen's Comet, by Father Secchi 75 



On gilding Glass for the Preparation of Optical Mirrors, by W. 



Wernicke 77 



On some special Electromagnetic Phenomena, and on Weber's 



Hypothesis on Electromagnetism, by E. Villari 79 



Application of the Vibrations of Compound Bars to determining 

 the Velocity of Sound, by J. Stefan 80 



NUMBER CCXLI.-AUGUST. 



Mr. H. Wilde's Experimental Researches in Magnetism and 



Electricity. — Second Series. (With a Plate) 81 



§ 3. On the Electric Condition of the Terrestrial Globe, 

 and on the Absolute Character of the Law of Definite 



Electrolysis . . . . 81 



§ 4. On the Transmutable Nature of Water 106 



Mr. R. Moon on the Theory of Pressure in Fluids 116 



Dr. E. Divers on the Diammonic Carbonate, cr Normal Carbo- 

 nate of Ammonium 125 



Mr. J. E. Reynolds on a modified Spectroscope for use in the 



examination of Minerals 129 



Mr. G. J. Stoney on the Internal Motions of Gases compared 



with the Motions of Waves of Light 132 



Mr. J. Croll on Geological Time, and the probable Date of the 



Glacial and the Upper Miocene Period 141 



Proceedings of the Royal Society : — 



Mr. R. Moon on the Impact of Compressible Bodies, con- 

 sidered with reference to the Theory of Pressure 154 



Proceedings of the Geological Society : — 



Mr. G. Maw on the Disposition of Iron in Variegated 



Strata 157 



Dr. H. B. Holl on the older Rocks of South Devon and 



East Cornwall 158 



On Secondary Currents and their Applications, by M. G. 



Plante .* 159 



On the Formation of Peroxide of Silver by Ozone, by F. Wohler. 1 60 



