REVIEWS 515 



interpretation of marine action furnishes as complete a solution there as in Maryland, 

 and he expects this interpretation ultimately to find application over much of the 

 Atlantic coastal plain. 



WEST VIRGINIA. 



Campbell, M. R. The Huntington Folio. Geol. Atlas of the United 

 States, U. S. Geol. Survey, Folio 69, igor. 



Drainage and Pleistocene deposits are the topics pertinent to this review. The 

 Huntington Quadrangle includes several streams with an unsymmetrical arrangement 

 in their respective basins, which is explained by tilting. This quadrangle includes 

 also a part of the well-known Teazes or Teays valley, the former course of Big Kana- 

 wha River. The diversion of the river into its present course is referred to an ice- 

 gorge near Milton, and so is the heavy accumulation of silt in the abandoned valley, 

 which is here given the name Teay formation. The gorging is thought to have been 

 accomplished by river ice concurrent with the culmination of glaciation in the adja- 

 cent part of the glaciated region. The same ice gorge is thought to have caused 

 Hurricane Creek to continue northward past Teays valley in a course parallel with 

 that of the diverted Kanawha. An ice-gorge on Guyandotte River near the Lincoln- 

 Wayne county line is thought to have diverted the stream to a course a short distance 

 east of the old one. This river sustained another diversion near its mouth in passing 

 across Teays valley, which, however, is not mentioned. In support of the view that 

 these diversions were caused by ice-gorges, the smaller amount of silt below the site 

 of the supposed gorging in Teays valley is brought forward. The reviewer, however, 

 doubts whether there was a smaller deposition in this valley below the site of the 

 supposed gorge than above. There is still a heavy deposit in part of this lower 

 course near where the Guyandotte River has been diverted, and Mud River has 

 apparently removed much of the silt between there and Milton. The value and 

 applicability of this new hypothesis remains to be determined. In Monograph XLI, 

 U. S, Geological Survey (pp. 105, 106), the reviewer called attention to the fact that 

 the silting was sufficient to build the valley up to a level as high as low cols in the 

 district north of it, thus making it possible for a stream to take a new course without 

 having to open a channel. 



The Teay formation or silt deposit which graded up the old course of the Big 

 Kanawha is a fine deposit overlying coarse material such as commonly characterizes 

 river beds. It has a depth of about sixty feet where best preserved from erosion, as 

 is the case near Hurricane village. 



New Ichthyosauria from the Upper Triassic of California. By J. 

 C. Merriam. University of California Publications, Bul- 

 letin of the Department of Geology, Vol. Ill (1903), 

 pp. 249-63, Plates XXI-XXIV. 

 The interesting discoveries made by Dr. Merriam, during the past 

 few years, of many new and strange forms of Ichthyosauria from the 

 Californian Triassic have added much to our previous knowledge of 

 this remarkable order of reptiles. To the six species of Shasiosaurus 



