113 



4. AMERICA. 



Andrews, Prof. E. B. A comparison between the Ohio and "West 

 Virginia sides of the Alleghany Coal-field. Amer. Journ. ser. 3, 

 vol. X. pp. 283-290. 

 Denies that the Pittsburgh seam is formed of several coalescing 

 seams, and believes it to be the best datum-line of the Ohio coal-field. 

 Except on the W. Virginian side of the outcrop, the distance from this 

 seam to the base of the productive Coal Measures keeps much the 

 same, from 500 to 800 feet. There, however, the distance is more than 

 3000 feet. These facts lead to the conclusion that the so-called Con- 

 glomerate is of no general importance as an horizon ; hence the terms 

 Millstone Grit and Coal Measure Conglomerate, if they cannot apply to 

 a uniform horizon in the N. American Carboniferous system, had better 

 be retained only for their lithological meaning. G. A. L. 



Anon. (W. J. F.). Canadian Scientific llesearch in 1874. Amer. 

 Journ. ser. 3, vol. ix. pp. 236, 237. From Montreal Gazette^ 

 15 Jan., 1875. 

 Account of the geological work done, during 1874, by Mr. James 

 Richardson in British Columbia, by Mr. G. M. Dawson in the AVcstcrn 

 Boundary districts, and bv Prof. Bell in the North-west Territories. 



G. A. L. 

 Anon. Coal in Patagonia. Ulnstitut, Feb. 17. Note in Amer. 



Journ. ser. 3, vol. ix. p. 323. 

 A detailed report of the discovery has been published by M. F. 

 Amal. The locality is Vaqueria, in the Straits of Magellan ; there arc 

 3 seams, together 26 feet tliick. Age of beds not stated. G. A. L. 



. Geological Survey of Wisconsin. Amer. Journ. ser. 3, vol. 



ix. pp. 398-400. 

 Brief account of the work done since the organization of the Survey 

 under Dr. Lapham in 1873. 



. The Geology of New Mexico. Amer. Journ. ser. 3, vol. x. 



pp. 1.52, 1.53. 



Notice of Prof. Coikj's results while on the Wheeler U.S. Survey in 

 1874, chiefly as regards the country for 40 miles W. of the Sierra 

 Madre. The Triassic beds forming part of the axis of this range havo 

 been foand to be lacustrine. G. A. L. 



. Iloport on a plan for the reclamation of the alluvial basin 



of the Miasimippi River subject to inundation. Pp. 15, maps. 

 Wathington. 

 " Contains much matter on the levels, flood, and alluvial ba^un of the 

 Mississippi.'' — Amer. Journ. ser. 3, vol. x. p. 2-iO. 



1875. 1 



