REVIEWS 397 



are also mapped several bodies of intrusive diorite and syenite, and small 

 areas of andesitic and basaltic lavas, all doubtfully assigned to the 

 Tertiary. 



C. W. T. 



Boone County. By C. E. Krebs and D. D. Teets, Jr. West 

 Virginia Geol. Survey, 1915. Pp. 648, pis. 52, figs. 3, maps 2. 



County reports now published cover the greater part of the northern 

 and western sections of the state. In these reports are chapters on 

 physiography and mineral resources, but those treating of the stratigraphy 

 of the area are of more general interest. 



In Boone County the outcropping rocks range in age from the middle 

 of the Conemaugh to near the base of the Kanawha series. The Kana- 

 wha has a remarkable development. It has been, differentiated into 

 29 formations totaling 1,844 feet in thickness. About 30 coal beds 

 from 1 to 1 5 feet thick are intercalated in the series. Scores of partial 

 sections are given. 



There is a preliminary report on the paleontology of the county, 

 and an excellent geologic map accompanies the report in a separate 

 cover. 



W. B. W. 



Guidebook of the Western United States. Part B, The Overland 

 Route. By W. T. Lee, R. W. Stone, H. S. Gale, and Others. 

 U.S. Geol. Survey, Bull. 612, 1915. Pp. 244, pis. 50, figs. 20, 

 maps 25. 



This series of guidebooks is without question the best ever published 

 and should find a wide use among the traveling public of the United 

 States. This volume serves at once to direct the attention of the traveler 

 to the things most worth observing in the land through which he passes, 

 and to render more interesting every stage of the journey. Even the 

 best-informed person, who has been over the route many times, cannot 

 fail to profit by the use of it, and those planning a trip for the first time 

 will find in it by far the most complete, reliable, and attractively written 

 guide available. A wealth of historical, geographical, and geological 

 information is woven together into an interesting and comprehensive 

 whole, written in narrative style. The industries and agricultural and 

 mineral resources of the regions passed through are discussed, and a few 



