ETTEOPE. 69 



Dewalqne, Prof. G. Rapport sur le complement du Memoire cou- 

 ronnc do MM. do la Valleo-Poussin et llenard sur les roches plu- 

 toniennes do la Belgique. [Report, on the Supplement to Messrs. 

 de la Yallee-Poussin and Renard's Prize Memoir on the Plutonic 

 Rocks of Belgium.] Bull, Ac. li. Bel^. ser. 2, t. xli. pp. 407-430. 



Gives an analysis of the final part of this work. G. A. L. 



Didelot, — . Compte rendu sommaire de I'excursion 4 la 



montagne des Yoirons. [Excursion to the Voirons.] Bull. Soc, 

 Geol. France, 3 ser. t. iii. pp. 669, 670, pi. xxv. fig. 1 (section). 



Doelter, Dr. C. II gruppo vulcanico delle Isole Ponza : monografia 



geologica. [Geolog}' of the Ponza Isles.] Mem. M. Com. geol. 



Jtal. iii. part i. pp. 1-43, pis. 1-4 (geol. map & section); Denl-schr. 



Jc. AJc. Wiss. xxxvi. [See Geological Record for 1875, p. 59.] 



The island of Zannone shows schists and limestone probably Palajo- 



zoic. Yentotene contains enclosed iu the tuft's fragments of granite, 



syenite, diorite, green schists, &c. ; these facts point to a submarine 



connection between the islands and the Ligurian Alps. The time of 



volcanic activity was probably the end of the Tertiary period. E. B. T. 



. Das Porphyrterrain im Fleimserthal. [Fleimserthal Por- 

 phyries.] Verh. k.-Jc. f/eol. Ueiclis. pp. 150, 151. 

 Explanation of the geological map of this district. 



DoUfus, Gustave. Sur une nouvelle coupe observee h Rilly-la- 



Montagne, pros Reims (Marne). [New Section at Rilly.] Ann, 



Soc. Geol. Nord^ t. iii. pp. 153-173 ; 3 figs, in text. 



Gives a number of detailed sections, with lists of fossils, illustrating 



the mode of occurrence and geological position of the Rilly beds, which 



are considered as the continental equivalent, in part, of the marine 



Bracheux sands (M. Eocene) of the Paris Basin. A table shows the 



synchronism of the Eocene divisions in the Paris, Flemish, and Hes- 



bayean Basins. G. A. L. 



Douville, — . Note sur la constitution du terrain tertiaire dans une 



partie du Gatinais et de I'Orleanais. [Tertiary Beds of Part of 



the Gatinais and the Orleanais.] Bull. Soc, OSol, France, 3 s^r. 



t. iv. pp. 91-104, pi. ii. 



Describes sections in the Loiret, between Orleans, Montargis, and 



Gien, and determines the following horizons in the Tertiary rocks of 



the district: — 1. Upper Clays and Sands ; 2. Whito and Green Marls ; 



3. ^Nriddle Clays and Sands ; 4. Upper Limestone ; 5. Lower Clays and 



Sands ; 6. Lower Limestone. These were formerly grouped in two 



divisions, " Calcaire de Beauce" and ** Argiles et Sables do la Sologne." 



G. A. L. 



. Note sur le Systeme du Sancerrois et le terrain siderolithicjuo 



du Berry. [The Sancerrois System of Upheaval and the Sidoro- 

 litic Deposits of Berry.] Bull. Soc. Geol. France, 3 ser. t. iv. pp. 

 104-110. 



The faults of the Sancerrois lino of dislocation are newer than both 



