48 GEOLOGY. 



Between the clay with Ostrcea Leymerii and a bed of ironsand 

 worked at Wissant several beds of clay and ferru^nous sands with 

 fossils are noted, as corresponding with a parallel series on the English 

 side of the Channel. G. A. L. 



Barrois, Ch. Ammonites texanus et suhtricarinatus dans la craie de 

 Lezennes. [Am. teccanus and Am. suhtricarinatus in the Chalk of 

 Lezennes.] Ann. Soc. Ge'ol. Nord, 1870-74, pp. 54-55. 



Both species new to the district. 



. Notice snr la faune marine du terrain honillier du bassin 



septentrional de la Prance. [Marine fauna of the Coal Measures 

 of Northern Basin of France.] Bull. Soc. Geol. Prance, 3 ser. t. ii. 

 pp. 223-226, and Ann. Soc. Geol. Nord, 1870-74, pp. 55, bQ. 

 Of 18 species found, 9 have already been quoted as belonging to 

 the Coal Measures, while the other 9 have only been known in Carbo- 

 niferous Limestone. This favours the correctness of the theory ad- 

 vanced on stratigraphical grounds, that the northern coal-fields of 

 Prance owed their origin to the oscillations of the sea-coast, while the 

 more inland basins had been formed in bogs and marshes. G. A. L. 



L'Etage de la Gaize dans le Boulonnais. [Horizon of the 



Gaize in the Boulonnais.] Bull. Soc. Geol. Prance, 3^ ser. t. ii. 

 pp. 216-229, 1 woodcut (section) . 

 Between Desvres and Samer a section showed 2 beds of clay, each 

 about 18 inches thick', lying upon the Gault, and below the glauconitic 

 Chalk, with Turrilites (Cenomanian). Neither bed has yielded any 

 fossils ; but the author refers the upper one to the glauconitic sands 

 with Pecten asjoer of the N.E. of the Paris Basin, and the lower to the 

 Gaize of the Argonne. G. A. L. 



, and — Dtjvillier. Terrain cretace du Boulonnais. [Creta- 

 ceous beds of the Boulonnais.] Ann. Soc. Geol. Nord, 1870-74, 

 pp. 52-54. 

 Chiefly consists of an account of a bed of clay referred to the horizon 

 of the Gaize of the Argonne [see above]. An analysis of this clay is 

 given. • G. A. L. 



BAUDRiMoiTT, A. Etudo dcs difFerents sols de la Gironde. [Soils of 

 the Gironde.] 8vo. Bordeaux. 



, — Chevreul, and A. Delbsse. Sur les guanos et sur les 



phosphates du departement du Lot. [Guanos and phosphates of 

 the Lot.] Bull. Soc. Cent. Agric. Prance, 3 ser. t. ix. p. 514. 



Batjwens, — . Note sur un depot coquillifere trouve sous la tourbe 

 a Koekelberg. [Shell-deposit under peat at Koekelberg.] Proc. 

 "Verb. Soc. Mai. Belg. t. iii. pp. cciii-ccvi. 

 Gives.a list of shells found in a marly clay, with calcareous concre- 

 tions, beneatJi about 3 metres of peat, the clay being 30 centim. only 

 in thickness. The shells a'l'e all land and freshwater ; and among them 

 is Clausilia ''plicatula, which no longer lives in the neighbourhood of 



