PROCEEDINGS OE 

 THE EOYAL SOCIETY. 



VOL. XIX. 



No. 155. 



CONTENTS. 



December 8, 1870. 



PAGE 



Report on Deep-sea Researches carried on during the Months of July, 

 August, and September 1870, in H.M, Surveying- ship ' Porcupine.' By 

 W. B. Carpenter, M.D., F.R.S., and J. Gwyn Jeffreys, F.R.S. . , 146 



I. On the Extension of the Coal-fields beneath the Newer Formations of Eng- 

 land ; and the Succession of Physical Changes whereby the Coal-measures 

 have been reduced to their present dimensions. By Edward Hull, 

 M.A., F.R.S., F.G-.S., Director of the Geological Survey of Ireland . . 22z 



II. On the Constitution of the Solid Crust of the Earth. By the Ven. John 



Henry Pratt, Archdeacon of Calcutta, M.A., F.R.S .223 



III, Actinometrical Observations made at Dehra and Mussoorie in India, Octo- 

 ber and November 1869, in a Letter to the President. By Lieut. J. H. 

 N. Hennessey 225 



II. Some Experiments on the Discharge of Electricity through Rarefied Media 



and the Atmosphere. By Cromwell Fleetwood Varley .... 236 



III. Polarization of Metallic Surfaces in Aqueous Solutions, a new Method of 

 obtaining Electricity from Mechanical Force, and certain relations be- 

 tween Electrostatic Induction and the Decomposition of Water. By 

 Cromwell Fleetwood Yarley 243 



December 22, 1870. 



January 12, 1871. 

 I. On Fluoride of Silver.— Part II. By George Gore, F.R.S, 



235 



For continuation of Contents see 4.tk page of Wrapper. 



