418 Notices of Memoirs. 



Moorhey, the only other locality where the Keuper Marls have 

 been proved, is about 7 furlongs to the south-east of the Crosby 

 Brickworks, and the Lower Keuper Sandstone of the village 

 intervenes. The Marls at Moorhey, I should say, are somewhat 

 lower down in the series than those just described. If the whole 

 area of the pit is bottomed many interesting facts may come to light. 



2iTOTic:E3S OIF nycEnvcoiias- 



I. — Le Dossier Htdkologique du regime aquifere en terrains 

 calcaires, et le role de la Geologic dans les recherches et etudes des 

 travaux d'eaux alimentaires. (Bull. Soc. Beige geol., 1901, x, pt. 5.) — 

 In a paper of some 180 pages Mr. Van den Broeck replies to the 

 note of Mr. Thomas Verstraeten entitled " Hydrologie des roches, 

 necessite de preciser les situations et les termes." The bulk of the 

 paper is of a controversial nature, but Mr. Van den Broeck has 

 brought together a great deal of valuable matter relative to the 

 subject. With a courteous consideration for his readers the author 

 has provided a detailed table of contents, which occupies 12 pages, and 

 from this we gather that the paper deals with the following items : — 

 Hydrology of the Carboniferous rocks ; Hydrology of the Chalk ; 

 of the district round Han-Rochefort, of Bocq and Hoyoux, and of 

 Eemouchamps ; the role of geology in the search for water and in 

 the application of hydrology, especially in the study of the 

 aquiferous resources of the Carboniferous System ; Hydrology of 

 Condroz, and of the horizontal beds of Tournai. The author 

 concludes his paper by saying that it is thanks to the progress 

 of Geology and Speleology that these practical questions of applied 

 hydrology can be easily solved to the great benefit of human 

 populations. 



11. — Maryland Geological Survey: Eocene. (Baltimore, 1901, 

 pp. 332, 64 plates, map.) — The Eocene deposits of the State of 

 Maryland are described in this volume by William Bullock Clark 

 and George Curtis Martin. The description is prefaced with an 

 excellent map and a bibliography. The deposits are divided into 

 two formations, the Nanjemoy above and the Aquia below. Both 

 are rich in fossils, full lists of which are given. The systematic 

 paleeontology begins on p. 93, and is treated of by various specialists. 

 The Vertebrata are few in number and consist of four crocodiles 

 and two tortoises, beside the usual tertiary rays and sharks; there 

 are also remains of Xiphias and Phyllodus. The Crustacea include 

 some interesting Ostracods described by Ulrich. The Foraminifera, 

 of the usual Eocene types, are described by E. M. Bagg, who is doing 

 careful work on these Protozoa, in an area where they have been for 

 some reason much neglected. The Mollusca by Clark and Martin, 

 the Ccelenterata by Vaughan, and the Bryozoa by Ulrich are all well 

 illustrated, and will be of great use for comparison. Two small 

 Carpolithi are described and figured by Arthur Hollick. 



