ETROPE. 87 



Ortlieb, J. Remarques sur la carte geologique des environs de Rou- 

 baix, par M. G. Dollfiis. [Remarks on the geological map of the 

 neighbourhood of Roubaix, by M. G. Dollfus.] Ann. Soc. Geol. 

 Nord, 1870-74, pp. 57, 58. 

 A novelty in this map is the representation by a special colour of a 

 passage-zone which may be termed Middle Ypresian. What is repre- 

 sented in the map as Upper Landenian M. Ortlieb believes to be slightly 

 lower beds between the Upper and Lower Landenian, the former of 

 which he thinks is not to be found near Roubaix. G. A. L. 



. Compte-rendu d'une excumon a Cassel. [Excursion to 



Cassel.] Ann. Soc. Geol. Nord, 1870-74, pp. 101-109. 

 The geology of Mont Cassel and of the Mont des RecoUets (with 

 tabular section) is sketched. The following series are described in 

 ascending order : — Bruxellian Beds (Tarritella-edita beds ; white un- 

 fossiliferous sands, sands with friable fossils, and bands with Cardita 

 planicostata ; Nummulites-lcevigata sandstone); LaecTcenian Beds {Echinus 

 zone with Terebratula KicTcxl ; Zone of Nammulites variolaria and Ceri- 

 ■thiian giganteum ; Sands ; Glauconitic clay). G. A. L. 



Ortlieb, J., and G. Dollfus. Compte-rendu de Geologic strati- 

 graphique de I'excursion de la Societe Malacologique de Belgique 

 dans le Limbourg beige, Mai 1873. [Excursion in Belgian Lim- 

 burg.] Ann. Soc. Mai. Belg. t. viii., Mem. pp. 39-57, 1 fig. in 

 text and 1 plate. 

 After giving details of sections, the authors discuss the classifica- 

 tion of the Limburg Tertiaries. They adopt a set of divisions similar 

 to that proposed by Lyell, and diff'erent from Dumont's. The beds are 

 equivalents of the U. and L. Rupelian and U. and L. Tongrian of Du- 

 mont ; but the divisions of Lyell and of the authors do not correspond 

 with them. The series is as follows, in descending order: — U. and M. 

 Olujocene (of Beyrich) : Nucula " tuff'eau" (clay of Lyell) ; Bergh Sands ; 

 Sands of Vieux- Jonc ; Marl of Henis. L. Oligocene : sands of Nurrepen 



and clay of Vliermael. G. A. L. 



o 

 Palmgren L. Beskrifning till Kartbladet "■ Arsta." Sveriges geol. 



untersok. Pp. 43. [Description of Map No. 50, Swedish Geolo- 

 gical Survey.] 

 . Beskrifning till Kartbladet " Nyniis." Sveriges geol. unter- 

 sok. Pp. 29, 3 woodcuts. [Description of Map No. 51, Swedish 

 Geological Survey.] 

 Parker, James. The " Elint Implements in the Valley of the Somme." 

 Journ. Viet. Inst. vol. viii. pp. 51-58, and abstract, under a different 

 title, in Proc. Warwicksh. Nat. and Archaol. Field Club for 1873, 

 pp. 14, 15. 

 Enters into the computation of the ago and growth of the peat. Con- 

 siders that the valley owes its origin " to operations connected with tho 

 rising from tho ocean bed " and not " to the slow excavation of river 

 action." W. W. 



