58 QJIOLOGY. 



Delesse, Prof. A. Note sur la carte hydrologique du departemenfc 

 de Seine-ct-Marne. [On the Hydrological Map of the Seine-et- 

 Marne.] Compt. Bend. t. Ixxxi. pp. 753, 754. See also N. Jahrh. 

 Heftvi. pp. 633-636.^ 

 Summarizes the conclusions respecting the distribution of the per- 

 meable and impermeable beds to which one is led by a study of the 

 map, in which horizontal curves represent the surface of the under- 

 ground sheets of water. G. A. L. 



Desor, Prof. E. Le paysage morainique, son origine glaciaire et 

 ses rapports avec les formations pliocenes d'ltalie. [Moraine- 

 features, their origin, and their relations with the Pliocene of 

 Italy.] Pp. xi, 94, Paris and NeucMtel, See also Arch. Sci. 

 Phys. Nat. t. liv. pp. 48-61. 



Dewalque, Prof. G. Sur quelques fossiles triassiques du grand- 

 duche de Luxembourg. [On Triassic Possils from Luxemburg.] 

 Ann. Boc. Geol. Belg. t. ii., Bulletin, pp. Iviii, lix. 

 Note of occurrence of forms new to the district in the Muschelkalk 

 of the neighbourhood of Diekirch. Eectifies a statement in his ' Pro- 

 drome d'une description geologique de la Belgique ' relative to some 

 greyish-green sandstones which he had there referred to the Gres 

 bigarre series, the fossils they have yielded now showing that they 

 belong to the Muschelkalk.' G. A. L. 



. On the Correlation of the Cambrian rocks of Belgium and 



Wales. Translated from the French, Bull. Ac. Boy. Belg. 2 ser. 

 t. xxxvii. no. 5, pp. 596-598, 1874, by G. A. Lebour, Geol Mag. 

 dec. 2. vol. ii. pp. 42, 43. 



Dewalque, Prof. G., A. Briart, and — Cornet. Eapports sur les 

 memoires concernant le bassin houiUer de la province de Liege. 

 [Reports on the memoirs on the Liege Coalfield.] Bull. Ac. Boy. 

 Belg. ser. 2, t. xl. pp. 900-974. 



Criticise the two memoirs sent in answer to the prize-question re- 

 quiring a description of the Coal Measures of the Lie'ge Basin. 



Dewalque, Prof. G., L. De Koninck, and — Dupont. Eapports sur le 

 travail de M. Mourlon concernant I'etage Devonien des psam- 

 mites du Condroz dans le bassin de Theux, etc. [Eeports on 

 M. Mourlon's paper on the Condroz Sandstone of Theux, etc.] 

 Bull. Ac. Boy. Belg. ser. 2, t. xl. pp. 673-678. 



Point out the chief new facts contained in M. Mourlon's paper. 



Dieulafait, Prof. L. [On the Lignites of the Yar.] Bull. Sac. Sci. 



Inclust. Marseille, t. ii. p. 126. 

 These lignites lie between the Lias and Trias, below the Avicula 

 contorta zone, which is very constant. 



Dieulafait, Prof. L., and — HoUande. Existence et developpement 

 de la zone a Avicula coyitorta dans Tile de Corse [Presence of the 

 Av. contorta zone in Corsica.] Compt. Bend. t. Ixxxi. p. 506. 



