AMERICA. 125 



teb rates from the Coal Measures of Linton, Ohio.* The course of events 

 in the formation of this anomalous coal-seam is explained. G. A. L. 



I^EWBERRY, Prof. J. S. On the Structure and Origin of the Great 

 Lakes. Proc. Lye. Nat. Hist. N. York, ser. 2, no. 4, pp. 136-138. 



"With the exception of Lake Superior all the great North-American 

 lake-basins are excavated out of nearly horizontal strata. The proof 

 is conclusive that each of these basins has been filled, and at least 

 partly excavated by ice descending from the Canadian Eozoic high- 

 lands. G. A. L. 



. On the Parallelism of Coal-seams. Amer. Journ. ser. 3, 



vol. vii. pp. 367-3G9. 



Argues against the views that the subsidence of coal-areas was always 

 continental and general, and that the seams are necessarily parallel : in- 

 stances cases of seams separated by varying intervals of beds. E. B. T. 



On the Lignites and Plant-Beds of Western America. Amer. 



Journ. ser. 3, vol. vii. pp. 399-404. 

 The writer states that all the Lignite-beds of New Mexico (referred 

 to the Eocene by Prof. Lesquereux) are unmistakably of Cretaceous 

 age. He believes Prof. Lesquereux is likewise wrong in assigning an 

 Eocene origin to the Colorado Lignites, which Profs. Meek, Marsh, Cope, 

 and Stevenson consider to be Upper Cretaceous. The Upper Missouri 

 Lignites, considered as Lower Eocene by Prof. Lesquereux, he regards 

 as Miocene. The coals of Vancouver's Island have been stated to be 

 of Tertiary age ; he says that the evidence that they are Cretaceous is 

 overwhelming. G. A. L. 



Newberry, Prof. J. S. [and Profs. E. Orton, E. B. Andrews, and 

 N. H. Wixchell]. llcport of the Geological Survey of Ohio. 

 Vol. ii. Geology and Palceontology. Part i. Geology, pp. 701, 

 with numerous maps and sections. Columbus. 



Treats of the physical geology of a large portion of the State. The 

 first chapter (xxx.), by Prof. Newberry, contains an account of the 

 surface -geology of Ohio — the chief subjects treated of being the 

 general glacial phenomena of the State, the boundaries of the gla- 

 ciated areas, buried channels, the order and succession of the Drift- 

 deposits, and the characters and distribution of the various members of 

 the series ; the mode of formation of the " Erie Clay," boulders, kames, 

 draining of the inland sea, terraces and beaches, origin of the lake- 

 ridges, causes of the Arctic climate of the glacial period, cause and 

 manner of the motion in glaciers, drift-gold, and the origin of the 

 great lakes. 



('hapter xxxi., by Prof. Newberry, is concerned with the composition, 

 extent, and subdivision of the great Carboniferous formation of Ohio. 

 This embodies all the more important facts regarding the Carbonifer- 

 ous rocks of Ohio, comprising the Waverley Sandstone, the Lower Car- 

 boniferous Limestone, and the Coal Measures. Chapter xxxii., by 

 Prof. Newberry, treats of the geology of Eric County and of the islands 



