46 GEOLOGY. 



Its extent is estimated at 30,000 square miles. The seams vary from 

 2 to 6 feet in thickness. G. A. L. 



Anon. Driving of the St. Gothard Tunnel. Coll. Guard, vol. xxviii. 

 pp. 240, 314, 896. 



Articles translated from the ' Annales Industrielles.' The rocks driven 

 through at the Goschenen and Airolo ends are described. 



. Discovery of Iron in Prance. Coll. Guard, vol. xxviii. p. 532. 



Note of the discovery of a vein of iron-ore near Mortain, La 

 Manche. 



. Probable extension of French Coal-fields. Coll. Guard, vol. 



xxviii. p. 667. 

 Note of the coal-fields noticed in the " Eeport of the French Par- 

 liamentary Commission of Inquiry into the state of the Coal Trade in 

 France." G. A. L. 



. [? P. Le N. Fostee, jun.] . Coal Mining in Italy. — The mines 



of Monte Rufoli. Coll. Guard, vol. xxviii. p. 815 ; and Journ. Soc. 



Arts, vol. xxii. no. 1147, pp. 1001, 1002. 



The coal (Miocene) is in the clay locally known as " Maltajone," 



which lies immediately above the Eocene Alharese limestone and schists. 



Each of the two seams is a metre thick. A section of the beds is 



given. 



. Coal in Turkey. Coll. Guard, vol. xxviii. p. 828. 



Note on the coal at Heraklea on the Black Sea, where seams from 5 

 to 12 feet thick are worked. 



. I calcari a Fusuline nelle Alpi. [Fusulina-limestones in the 



Alps.] Boll. E,. Com. geol. Ital. pp. 105-107. 



Notice of a paper by Dr. Fuchs in the " Jahrbuch " of the Geological 



Institute, 1873. Fusulina was found at three horizons, two near the 



top of the Carboniferous, above the zone of Peco^pteris oreopteridis, and 



the third in the Permian. E. B. T. 



. Sulla posizione degli strati di Schio. [Position of the Schio 



beds.] Boll. R. Com. geol. Ital. pp. 166-168. 

 A review of Prof. Fuchs's paper in the Proc. Geol. Inst. Yienna. The 

 beds belong to the Aquitanian, Oligocene, or L. Miocene ; their pecu- 

 liarity is in the number of Pectens and EcMnidce which they contain. 



E. B. T. 



. The Salt Works of Yolterra. Journ. Soc. Arts, vol. xxii. 



no. 1138, p. 887. 

 The salt is in beds in Tertiary clays. 



. The Coal Mines of Dranista. Journ. Soc. Arts, vol. xxii. 



no. 1147, p. 1003. 

 The aggregate thickness of coal is 8 feet, which may extend over 30 

 square miles. The coal is of Tertiary age. 



. Carte geologique detaillee de la France. Generalites. B. 



Avertissement. Historique et definition du travail. Mode de pub- 



