Notices of Memoirs — Charles Moore's Report. 563 



atone as a source of Water-supply. His remarks refer to the neigh- 

 bourhood of Liverpool, and he discusses the origin of the supply of 

 water. Mr. Bostock had long thought that more water was raised 

 from the wells of the district in one month than the rainfall would 

 supply in twelve ; and, from his observations, it appears to him be- 

 yond all doubt that the bulk of the water supply is drawn from 

 the sea. 



Mr. H. Hicks, F.G.S., furnishes some notes on the Arenig rocks 

 (or Skiddaw-slates) in the neighbourhood of St. David's. His re- 

 marks refer more particularly to a set of beds underlying the true 

 Arenig rock, and which have been termed the Lower Arenig rocks 

 by Mr. Salter and himself. They rest upon, and, indeed, graduate 

 into the Lingula Flags, Their thickness is about 500 feet, and they 

 are invariably rich in fossils ; the absence of Graptolites is note- 

 worthy. Up to the present time about twenty new species have 

 been discovered in these beds. The Brachiopoda were described 

 by Mr. Davidson in the Geological Magazine, Vol. V., 1868. 



In the Upper or true Arenig rock, Graptolites begin to prevail. 

 These beds are less fossiliferous than the underlying series, and most 

 of the species in the two groups are entirely distinct. 



Mr. G. H. Morton brings forward some preliminary observations 

 on the Carboniferous Limestone in Flintshire, When his investiga- 

 tions are completed the detailed results will be communicated to the 

 Society. 



Mr. Norman Tate, F.C.S., in an introductory paper on the 

 Chemistry of the primaeval earth, lays before the Society some of 

 the more important facts which were touched upon during the late 

 discussion between Dr. Sterry Hunt and Mr. David Forbes, and he 

 also points out some other matters which he thinks should be taken 

 into consideration in studying the subject. 



Mr. Isaac Roberts writes on the wells and water of Liverpool. 

 He describes seven wells, and notices the mineral matter contained 

 ni the waters. The observations on the source of the water, lead 

 him to a conclusion similar to that at which Mr. Bostock has arrived, 

 in the paper previously noticed. 



The last paper is by Mr. G, H, Morton, F.G.S., etc., on the 

 geology and mineral veins of the country around Shelve, Shrop- 

 shire, etc, A notice of this appeared in the November number of 

 the GEOLOGfiCAL Magazine, p. 519. 



TI. — Report on Mineral Veins in Carboniferous Limestone 

 and their Organic Contents.* 



By Charles Moore, F.G.S. 



MB. MOORE has for a long time made the phenomena attending 

 Miaeral veins in different parts of England, and the Organic 

 remains he has found in them, his special study. In his paper, he 

 first referred to the prevalent ideas which were entertained as to the 

 origin of minerals in veins, some supposing them to be due to sub- 

 ^ Read before the British Association, Section C, Exeter, August, 1869. 



