402 REVIEWS 



Logan and Mingo Counties. By R. V. Hennen and D. B. Reger. 

 West Virginia Geol. Survey, 1914. Pp. 776, pis. 15, figs. 23, 

 maps 2. 



The 1914 contribution to the excellent series of county reports of 

 this state includes two counties on the southwestern border. The 

 general treatment is similar to that of earlier reports. 



The strata exposed range from middle Pottsville to the lower mem- 

 bers of the Conemaugh series. A large number of detailed sections of 

 these series are given. A table of 150 coal analyses, both proximate and 

 ultimate, is given, and under separate cover is a map showing areal and 

 economic geology and structure geology. 



W. B. W. 



Biennial Report of Vermont State Geologist. By G. H. Perkins 

 and Others. 1913-14. Pp. 448, pis. 78, figs. 41. 



The greater part of this report treats of the marble industry of the 

 state. It contains reprints of Bulletins 521 and 58Q of the United States 

 Geological Survey which deal with commercial marbles of this area. 



Separate articles by various writers give brief resumes of the geology 

 and mineralogy in the vicinity of Hardwick, Woodbury, and Benning- 

 ton. The talc deposits of the state are described by E. C. Jacobs. He 

 believes that these deposits have resulted from the metamorphism of 

 basic intrusions into sedimentary country schists. 



W. B. W. 



Biennial Report of Missouri Bureau of Geology and Mines. By 

 H. A. Btjehler. 1913-14. Pp. 62. 

 This is chiefly an administrative report of work completed by the 

 survey staff during this biennial period. Statistics on mineral produc- 

 tion in the state during 1913 and 1914 also are given. 



W. B. W. 



Devonian of Southwestern Ontario. By C. R. Stauffer. Geol. 



Survey of Canada, Geol. Series, No. 63. Pp. 341, pis. 20, 



map 1. 

 Devonian beds outcrop over the entire area of the Ontario province 

 that projects southwest between Lakes Huron and Erie. Probably the 

 entire system is present although the correlations of the upper and 



