CONTENTS. IX 



Page 

 Mr. Pkteb Spence on the Economization of Sulpliurous Acid in Copper 

 Smelting 43 



Mr. John Spiller on the Preservation of Stone 44 



on certain New Processes in Photography 45 



Messrs. J. Axfbed Wanklyn and Robert Schenk on the Synthesis of 

 Caproic Acid 46 



Mr. J. Alfred Wankltn on the Existence of Putrescible Matter in River 

 and Lake Waters 47 



on the Action of Sodium on Valerianic and similar 



Ethers 47 



Mr. T. T. P. Bruce Warren on the Electrical Resistances of the Fixed and 

 Volatile OUs 47 



Mr. Walter Weldon on a New Manufacturing Process for the Perpetual 

 Regeneration of the Oxide of Manganese used in the Manufacture of Chlorine 48 



GEOLOGY. 



Address by Abchibald Geekie, F.R.S., F.G.S., President of the Section . . 49 



Mr. D. T. Ansted on the passage of Schists into Granite in the Island of 

 Corsica 64 



on the Lagoons of Corsica 54 



His Grace the Duke of Argyll on the Granites and other Rocks of Ben 

 More, from a Letter addressed to Professor PhUlips 55 



Capt. Fred. Brome's Report on recent Explorations in the Gibraltar Caves . 56 



Mr. F. M. Burton on the Lower Lias, and traces of an ancient Rhffitic Shore 

 in Lincolnshire 57 



Mr. William Cabruthers's Enumeration of British Graptolites 57 



on Calamitese and Fossil Equisetacese 58 



Mr. Robert Chambebs's Notice of an " Esker " at St. Fort 58 



Dr. CoLLiNGWooD on the Geology of North Formosa 58 



on the Geology of the Islands round the North of Formosa 58 



The Rev. W. H. Cbosskey's Notes on the relation of the Glacial Shell Beds 

 of the Carse of Gowrie to those of the West of Scotland 58 



Mr. F. GoEDON Davis on the Calamine Deposits of Sardinia 58 



Mr. Henry S. Ellis on some Mammalian Remains from the submerged 

 Forest in Barnstaple Bay, Devonshire 69 



Mr. C. Le Neve Foster's Notes on the Perseberg Iron-Mines, Sweden .... 60 



Mr. A. Geikib's Account of the Progress of the Geological Survey of 

 Scotland 60 



The Rev. J. Gunn on Tertiary and Quaternary Deposits in the Eastern 

 Counties, with reference to Periodic Oscillations of Level and Climate .... 60 



Professor Habkness and Dr. H. A. Nicholson on the Coniston Group of the 

 Lake-District 1 61 



Mr. D. Milne Home on the Old Sea-cliffs and Submarine Banks of the Frith 

 of Forth 61 



Mr. Edwabd Hull on the Sti'ucture of the Pendle Range of Hills, Lanca- 

 shire, as illustrating the South-easterly Attenuation of the Carboniferous 

 Sedimentary Rocks of the North of England 62 



's Obsei-vations on the relative Geological Ages of the 



principal Physical Features of the Carboniferous District of Lancashire .... 63 



