568 Reports and Proceedings — Geological Society of London. 



various types and of somewhat different cbaraoters. Most of the 

 gold from Menzies has been obtained from segregation reefs, which 

 have an irregulai'ly lenticular form ; they constitute a series of 

 small but rich pai'allel veins. There are also one or two fissure 

 veins, which though poor in their gold contents are promising by 

 reason of their extent and their probable continuity in depth. 



Mr. Woodwai'd has made an examination of all the mines to which 

 be could obtain access, and has supplied full descriptions of each in 

 relation to their economic value and to their geological characteristics. 



Statistics show that a little more than 400,000 ounces of gold were 

 obtained up to the close of 1905, and it is observed that a considerable 

 quantity is still got out by working miners aided by a State battery. 



This report by Mr. H. P. Woodward deserves commendation for 

 the very careful manner in which it has been prepared, and the 

 Chief Geologist is to be congratulated upon having acquired the 

 services of so able a coadjutor in the work of the Survey. 



A. H. F. 



iaEIPOK-TS J^ISYID DPI?,OGE!E;nDIIT(3-S. 



Geological Society of London. 



The opening meeting of the Session was held on November 7th, 

 1906. Sir Archibald Geikie, D.C.L., Sc.D., Sec.R.S., President, 

 in the chair. 



The following communications were read : — 



1. *' The Upper Carboniferous Eocks of West Devon and North 

 Cornwall." By E. A. Newell Arber, M.A., F.L.S., F.G.S. 



After a reference to the previous work in the area, the author 

 gives a description of the coast-sections, which display a highly 

 disturbed sequence of Upper Carboniferous rocks. Special attention 

 is paid to two lithological types — the carbonaceous rocks, 

 which contain inconstant and impersisteut beds of the impure, 

 smutty coal, known locally as ' culm ' ; these beds have yielded 

 plant-remains ; and the calcareous rocks, partly of marine and partly 

 of fresh-water origin, consisting of well-marked, impersisteut bands 

 of impure limestone, and conglomeratic beds of calcareous nodules 

 embedded in shales. One of the limestone bands, the Mouthmill 

 Limestone, is marine, and contains an abundant fauna ; while in 

 others the only fossils are Cnlamites Suckowi and Alethopteris 

 lonchitica. The calcareous nodules, which are not ferruginous, 

 occur in thin shale-beds, 2 to 3 feet thick ; they commonly contain 

 a marine fauna, with Goniatites, Lamellibranchs, and fish-remains. 

 The fossil flora and the horizon of the beds are next discussed, lists 

 of plants being given from various localities; and the conclusion 

 is reached that the rocks belong to the Middle Coal-measures, and 

 that there is no evidence of Upper Coal-measures. Conglomerates 

 of water-worn pebbles are also present, the pebbles being derived 



