AMERICA. ] 21 



Gatschet, Alb. S. Statistische Ubersicht der Steinkohlengewinnung 



in der Xord-Amorikanischen Union. [Statistics of Coal in the 



United States.] Petermanns Mittheil. Bd. xxi. pp. 286-297; map. 



Gives a summarized description of each coal-field, with full details aa 



to produce. The map (scale 1 : 13,.500,000) shows the limits of — 



1. The ^ew England anthracite district; 2. The E. Pennsylvania 



anthracite coal-field ; 3. The Appalachian bituminous coal-field ; 4. The 



Michigan; 5. The Illinois or Central ; 6. The Missouri coal-fields. 



G. A. L. 

 Gerber, Henrique. Geographical Notes on the Province of Minas 



Geraes. Translated by Capt. R. F. Burton. 

 One section is devoted to Geology and Mineralogy. The Province is 

 divided into three regions by lines parallel with the coast, characterized 

 by the following rocks : — 1. Granite and gneiss forming mountain 

 masses, with some quartzito and hornblende rock ; 2. Gneiss alternating 

 with mica-schist, talc-schist, with veins of itacolumite (laminated tal- 

 cose quartz) ; 3. Stratified rocks, " traumatic schists," with limestone. 

 In the latter are great caverns in which have been found remains of 

 Mammals, chiefiy Pliocene. Associated with the 2nd class are gold, 

 specular iron, argentiferous galena, and copper-ores. Some mineral 

 springs are noticed. P. D. 

 Gorceix, — . Resultats d'une premiere exploration de la province de 

 liio-Grande du Sud (Brc'sil). [Results of a preliminary exploration 

 of the province of Rio Grande do Sul, Brazil.] Bull. Soc. Geol. 

 France^ 3 ser. t. iii. pp. 55, bii. 

 Notices: — I. The Coal-field of Caudiote, which Carruthers and Plant 

 have regarded as Jurassic, but which reminds the author of the Tertiary 

 formations of the East. II. The Gold-bearing veins of Lavras. The 

 direction of the bed-veins is S. 60° W. As a mean, their contents 

 yielded from 30 to 35 grammes a ton. G. A. L, 

 . Notice sur le gisement ct I'exploration de I'or k Lavras, pro- 

 vince de Rio- Grande du Sud. [The Gold Deposit at Lavras, in 

 the province of Rio Grande do Sul, Brazil.] Bull. Soc. Indust. 

 min. St. Etienne^ ser. 2, t. iv. p. 361. 

 Hall, Prof. J. Geology of the Southern Counties of New York, and 



particularly of the Catskill ^Mountain Region. Amer. Assoc. 

 Harkness, Dr. H. W. A Recent Volcano in Plumas County. Proc, 



Calif. Ac. Sci. vol. V. pt. 3, pp. 408-412. 

 Describes a crater and lava-bed. Thinks that the volcano has been 

 active within 25 years. 



Harrington, B. J. Notes on the Iron Ores of Canada. Iron^ n. ser. 

 vol. V. pp. 550, 648, 806 ; vol. vi. pp. 74, 106. [?From Report 

 of Geological Survey of Canada, see Geological Record for 1874, 



The information here given is in part compiled from various sources. 

 Notes of the geological localities are added. Magnetites, p. 74 ; Hneraa- 

 tites, pp. 106, 166, 390 ; Titanic ore, or Ilmenito, p. 300 ; Limonito, 

 pp. 486, 808. W. T. 



