80 GEOLOGY. 



Devonian, and are associated with a great thickness of conglomerates ; 

 the seams are irregular and nearly vertical, numbering 7 in the middle 

 district. Output 14,000 tons at Montrelais, 10,000 at Mouzeil. The 

 other minerals of the country are noticed, and the salt marshes and ex- 

 traction of salt described, the average yield being about 43,000 tons. 



E. B. T. 

 Loriol, P. Monographic paleontologique et geologique des etages 

 superieurs de la formation jurassique. 2^ partie. [Palaeontological 

 and Geological Monograph of the U. Jurassic. Part 2.] Paris. 



Lory, Ch. Note sur des gisements de gypse dans le terrain juras- 

 sique de I'arrondissement de Gap. [Gypsum-deposits in the Ju- 

 rassic of the Arrondissement of Gap.] Bull. Soc. Geol. France, 

 3 ser. t. iii. pp. 17-22, one fig. in text. 

 The deposits of gypsum occur in connexion with the Middle and 

 Upper Lias and at the junction of the Kellovian and Oxfordian. These 

 Jurassic gypsums are more crystalline, more lamellar than and not so 

 granular as the common Triassic gypsum of the French Alps. The 

 figure represents a section through a sub-Oxfordian lenticular mass of 

 gypsum between Mcntrond and St. Genis. G. A. L. 



. Essai sur TOrographie des Alpes de la Savoie et du Dauphine 



consideree dans ses rapports avec la structure geologique de ses 

 montagnes. [Eolation between the Geology and Orography of the 

 Alps of Savoy and Dauphine.] Club alp. Frang. \^^^ an. p. 283. 



Lossen, K. A. [Letter on several local points in the Geology of the 

 Hartz.] Zeitsch. deutsch. geol. Ges. Heft ii. pp. 448-455. 



Lotti, B. Scoperta di strati nummulitici presso Prata e Gerfalco in 



provincia di Grosseto. [Discovery of Nummulitic beds, &c.] Boll. 



E. Com. geol. Ital. pp. 140-144. 



Recognizes a thin set of limestones with nummulites and fucoids in 



the hills above Grosseto, lying below a thick mass of sandstones and 



above another of clay-shale. E. B. T. 



' . II terrene nummuHtico del versante orientale della Cornata 



di Gerfalco. [Nummulitic beds of Gerfalco.] Boll. R. Com. geol. 



Ital. pp. 227-231. 



Nummulitic beds alternate with shales containing fucoids, of a total 



thickness of 150 feet ; below is a thick mass of calcareous sandstones 



and shales with fucoids, which represent the Cretaceous. Then comes 



a gap ; for the beds below are U. Lias and unconformable. E. B. T. 



Ludwig, Dr. R. Die Gegenden am Ssuna- und Semtsche-Plusse im 

 Olonezer Gouvernement. [The country of the Ssuna and Semtsche 

 rivers in the Government of Olonetz]. Bull. Soc. Imp. Nat. 

 Moscou, no. 3, pp. 108-127, 1 plate. 



. Appunti geologici suU' Italia. Boll. B. Com. geol. Ital, 



pp. 165-179. 

 Extract and translation of a paper noticed in the Geological Eecoed 

 for 1874, p. 81. 



