EUROPE. 77 



Ladriere, — . Note sur le Terrain devonien de la vallee de I'Hog- 



neau. [Devonian of the Hogueau Yalley.] Ann. Soc. Geol. Nord, 



t. ii. pp. 74-80. 



The three divisions of the Devonian rocks of Northern France are 



present. The limestones worked at Autreppe and in the Angre wood 



belong to the Middle Devonian. The Givet limestone of this district 



is di^'ided by means of hard siliceous bands into 8 series of beds. Lists 



of fossils are given. G. A. L. 



Lapparent, Albert de. Note sur Tetage oolithique inferieur dans le 

 departement des Ardennes. [Inferior Oolite, Ardennes.] Bull. Soc. 

 Geol. France, 3 ser. t. iii. pp. 146-150. 



The Ardennes afford a very fuUy developed type of the Lower Oolitic 

 series, the Great Oolite being 80 metres thick and the PuUers' Earth 

 nearly as much. With regard to the latter, the writer argues that 

 there the Fullers' Earth is more nearly allied to the Bajocian than to 

 the Eathonian. This view was apparently held by MM. Sauvage and 

 Euvignier, who coloured their " Carte geologique des Ardennes " ac- 

 cordingly. This department offers the key to the Oolitic divisions of 

 N. France. G. A. L. 



Laspeyres, Prof. Dr. H. Geognostische Darstellung des Steinkohl- 

 engebirges und Eothliegenden in der Gegend nordlich von HaUe 

 a. d. Saale. [Coal Measures and Rothliegende N. of HaUe-on-the- 

 Saale.] Ahh. geol. Spezialkarte Preuss. Bd. i. pp. 261-603. Berlin. 

 With map in two sheets (scale 1 : 25,000), 1 sheet of sections. 

 A sketch map (scale 1 : 200,000), 16 woodcuts. 



Ledoax, Ch. Memoire sur les mines de soufre de Sicile. [Sulphur- 

 mines of Sicily.] Ann. Mines, ser. 7, t. vii. pp. 1-84, map and 

 plate of sections. Abstract in Proc. Inst. Civ. Eng. vol. xli. 

 pp. 308-314. 

 Chap. I. is devoted to the commercial and industrial aspect of the 

 subject. Chap. II. is geological, and comprises a general descriptive 

 list of the divisions recognized in the Tertiary of Sicily by Mottura. 

 5 horizons of sulphur-bearing beds are distinguished, all apparently 

 limited to the Upper Miocene. They occur with gypsum in argillaceous 

 hmestone and marl. Sections from the following mines are given — 

 Madore (Lercara), Cimicia (Ilacal-Muto), Caltanisetta, Grotta calda, 

 Sommatino — showing how variable these deposits are. The origin of 

 the sulphur deposits is next discussed, Mottura's views being again 

 adopted. At the top of the saline clays of the Lower Miocene is a zone 

 of rock-salt ; this is described, as also are deposits of chloride of potas- 

 sium, chloride of magnesium, and sulphate of soda. Chap. III. de- 

 scribes the methods of working employed. Chap. IV. gives the metal- 

 lurgy of sulphur. Chap. V. consists chiefly of tables relating to prices 

 of transport &c. Chap. VI. resume and conclusion. G. A. L. 



Lefevre, Th. Note sur le gisement des fruits et des hois fossiles 

 recueillis dans lea environs de Bruxelles. [Horizon of the Fossil 



