90 Brief Notices. 



Gervillia and one of Perna from the Neaeran Beds. In further papers 

 Mr. Paris contributes " Notes on some species of Gervillia from the 

 Lower and Middle Jurassic Rocks of Gloucestershire ", with text- 

 illustrations and two plates, and a note on Gervillia acuta from the 

 Scarborough Limestone. Mr. T. H. Withers gives a short note " On 

 the occurrence of Pollicipes in the Inferior Oolite ". 



Mr. J. W. Gray deals with " The North and Mid Cotteswolds and 

 the Vale of Moreton during the Glacial Epoch". In this article the 

 author has discussed very fully the facts and opinions brought 

 forward by various geologists. With regard to land ice he remarks 

 that "There does not appear to have been any intrusion of these ice- 

 sheets into the Cotteswold area, except, perhaps, the nortliern flanks 

 and the Vale of Moreton"; and that "There are no signs of the 

 passage of any of the great ice-sheets over the Cotteswold uplands". 

 Some of the higlier gravels are considered to have been "introduced 

 by Tertiary streams that have been beheaded by the development of 

 the Severn tributaries ". The great accumulations of limestone-rubble 

 on the Cotteswold slopes were probably due to "extensive snowfields 

 liable to seasonal melting ", as suggested by Witchell. 



Although the Severn and Avon plain may have been subject to 

 estuarine conditions during Pleistocene times, " there is no evidence 

 that any of the gravels above a height of about 150 feet O.D. were 

 laid down in an arm of the sea." Some of the marine shells, such as 

 have been found, at Cropthorne, may have been derived from Glacial 

 beds in the Upper Severn valley. No evidences of Palaeolithic Man 

 have been found in the district described. 



2. Mineral Uesodeces of the Philippine Islands. — The Division 

 of Geology and Mines, of the Bureau of Science, Manila, under the 

 direction of the chief geologist, Dr. Warren D. Smith, has issued 

 a report on tlie above subject (1911). The principal minerals are 

 gold, silver, copper, manganese, and coal; and among other mineral 

 products are building-stone, gravel and sand, lime and cement, brick 

 and pottery clay. Occurrences of lead chromate, tin and zinc ores, 

 platinum, and. of beryl, spinel ruby, and garnet are recorded. The 

 value of certain seepages of oil has yet to be proved. * Gold occurs in 

 placer deposits, and also in veins in igneous rocks (granite, gneiss, 

 felsite, atid decomposed andesitic rocks), in contact-zones with the 

 sedimentary strata, and in fault-fissures. The sedimentary strata 

 appear to be of Oligocene, Miocene, and later date. The granite and 

 gneiss are regarded as probably pre-Tertiary or early Tertiary, the 

 diorite-schist as probably pre-Tertiaiy. Some andesitic rocks are 

 probably Miocene. The coal-bearing strata are grouped as Lower 

 Miocene or Oligocene ; there are four principal seams of variable 

 quality, bituminous and gas-coal ; and it is estimated that there are 

 many million tons in the islands, although it is remarked that the 

 inferior coals are found, in some of the more accessible districts. 



3. The Magdalen Islands. — Observations on these islands in the 

 Gulf of St. Lawrence, by Dr. J. M. Clarke, liave been published by 

 the New York Stnte Museum (Bulletin 149, Albany, 1911). They 

 consist of "a chain of disjected and sea - wracked remnant§ of 



