110 GEOLOGY. 



Analyses of the ores and also of the various brands of iron made are 

 given in tabular form. E. B. T. 



Seghers, F. [Note of Occurrence of Rolled Fossils in Belgian Drift.] 

 Ann. Soc. Mai. Belg. t. x. Bull. pp. xli, xlii. 



Seguenza, G. Eisposta alia Nota del Signer T. Fuchs. Boll. B. Com. 



(jeol. Ital. t. vii. pp. 237, 238. 

 Answer and end of the matter. [See Fuchs, p. QQ.'] 



. Di certe rocce vulcaniche interstratificate fra rocce de sedi- 



mento. [Interbedded Volcanic Eocks (in U. Pliocene of Messina).] 

 Rend. Ac. JSci, Napoli, ann. xv. fasc. vi. pp. 10-12, plate. 



Sevoz, Victor. Memoire sur les gisements pyrito-cuivreux de Cas- 

 tifao et Moltifao (Corse). [Copper-pyrites Deposits of Castifao and 

 Moltifao, Corsica.] Bull. tSoc. Sci. Lidust. Marseille^ t. iv. pp. 148- 

 162; 3 plates. 

 The localities are in the S. part of the Serra de Ten da ; and the cop- 

 per-ores occur in connexion with a series of green serpentinoiis and 

 euritic rocks, having a general N. and S. trend. The ores are : — more 

 or less cupriferous iron-pyrites, compact, in strings, nodular, in small 

 agglomerated crystals, or disseminated in the gangue ; yellow copper- 

 pyrites and Phillipsite, in veins or in small lenticular masses ; green 

 and blue carbonate of copper (azurito and malachite) impregnating 

 the rocks near the surface. All these are distributed along the W. side 

 of the long band of green rocks. Many details of working, &c. are 

 given, with sections, plans, and a geological map of Corsica. G. A. L. 



Sexe, S. A. Et Sporgsmaal angaaende Sveriges Bullestensaaser. 

 [A Question as to the Swedish '* Asar."] Geol. F'oren. Stockholm 

 Fork. Bd. iii. pp. 164-166. 

 Calls attention to the question whether or not some of the Swedish 

 " asar " are former middle-moraines resting on remains of bottom- 

 moraines. E. E. 



. Om nogle gamle Strandlinier. [Some old Coast-lines.] Arch. 



Math. Nat. Bd. i. pp. 1-18. 



Sjogren, A. Om forekomsten af Tabergs jernmalmsfyndighet i Sma- 

 land. [Occurrence of the Taberg Iron-ore deposit in Smaland, 

 Sweden.] Geol. F'oren. Stockholm Forh. Bd. iii. pp. 42-62. 

 An historical sketch of the hill is given ; its surrounding rocks, its 

 form and extension, &c. are described ; and the constitution of the ore 

 is noticed. The hill is 420 Swedish feet high, 3000 long, and 1500 

 broad. It consists of an almost homogeneous eruptive rock, composed 

 of olivine and magnetite, with grains of plagioclase, viridite, and ser- 

 pentine. The percentage of iron varies between 32 and 21. E. E. 



Om Hallsjoberget (Horrsjoberget), ett bidrag till Vermland 



geognosi. [The Horrsjo Mountain in Wermland, Sweden.] Geol. 



