CONTENTS. IX 



Mr. T. A. Read-win on some recent Changes of Gold Surfaces 53 



on some recent Gold Pseudomorphs 53 



Dr. D. C. Robb on the Oxidation of Colophony 53 



Mr. S. P. Thompson on some Circular Tables for Analysis 53 



Mr. William H. Watson on the Action of various Fatty Oils upon Copper 53 

 Dr. John Watts on Pyrocateehin as a Derivative of certain Varieties of 



Tannic Acid 53 



Mr. T. Wills on the Arctic Coal brought home by the late Expedition .... 53 



Dr. C. R. Alder Weight, Contributions to Chemical Dynamics 54 



on the Aconite Alkaloids 54 



GEOLOGY. 



Address by W. Pengelly, F.R.S., F.G.S., President of the Section 54 



Mr. Arthur Champernowne on the Succession of the Palaeozoic Deposits 

 of South Devon 66 



Professor J. W. Clarke on the Origin and Antiquity of the Mounds of 

 Arkansas, U.S 67 



Mr. J. H. Collins on the Serpentine of Duporth, in St. Austell Bay, Cornwall 68 



on the Drift of Plymouth Hoe 68 



Mr. C. E. De Rance on the Correlation of certain Post-Glacial Deposits in 

 West Lancashire 68 



M. G. Dewalque on the Devonian System in England and in Belgium 69 



Dr. 0. Le Neve Foster on some of the Stockworks of Cornwall 70 



■ on some Tin-Mines in the Parish of Wendron, 



Cornwall 70 



on the Great Flat Lode south of Redruth and Cam- 

 borne 71 



Mr. R. A. C. Godwin- Austen on the Geological Significance of the Boring 

 at Messrs. Meux's Brewery, London 71 



Mr. W. Gcnn, a Short Sketch on the Finding of Silurian Rocks in Teesdale. . 71 



Professor Heer on the Fossil Flora of the Arctic Regions 72 



Mr. J. Gwyn Jeffreys on the Post-Tertiary Fossils procured in the late 

 Arctic Expedition ; with Notes on some of the Recent or Living Mollusca 

 from the same Expedition 72 



Mr. G. A. Lebour on the Occurrence of Pebbles in Carboniferous Shale in 

 Westmoreland 72 



on the Age of the Cheviot Rocks 72 



Mr. William Molyneux on the Occurrence of Aviculopecten and other Marine 

 Shells in Deposits associated with Seams of Coal containing Salt Water in 

 the Ashby Coalfield 73 



Mr. George H. Morton on the Carboniferous Limestone and Millstone Grit 

 in the Country around Llangollen, N. Wales 74 



M r. A. S. Mott on the Source and Function of Carbon in the Crust of the 

 Earth 75 



M r. S. R. Pattison on the Carboniferous Coast-line of North Cornwall .... 75 



Mr. W. Pengelly, Sketch of the Geology of the Coast from the Rame Head 

 to the Bobb Tail 76 



