REVIEWS 827 



estimated the total lake area of the state at 810 square miles. The 

 authors believe that twice this amount is more nearly correct. 



W. B. W. 



Preliminary Report on Tertiary Paleontology of Western Washington. 



By Charles E. Weaver. Washington Geol. Survey, Bull. 



No. 15, 1912. Pp. 80, pis. 15. 



A Tertiary invertebrate marine fauna of 246 species is listed in this 



report. Eighty-four of these are new species and are described and 



figured for the first time. The fauna is very largely pelecypods and 



gastropods. 



Lower Eocene rocks are absent. The Upper Eocene fauna totals 

 79 species. The Oligocene fauna is limited to 10 species. A detailed 

 report will supplement this bulletin later and treat more fully of the 

 stratigraphic and structural relations. 



W. B. W. 



Geology of East Central Oklahoma. By L. C. Snider. Okla. Geol. 

 Survey, Bull. No. 17, 1914. Pp. 25, pis. 2, fig. 1. 



The area treated in this report includes all of Haskell County and 

 portions of five adjoining counties. It deals with structural features 

 almost entirely and the stratigraphy given follows United States Geologi- 

 cal Survey reports. 



About twenty anticline and syncline axes are plotted. Well- 

 drillers may locate the axes of anticlines roughly from this map and 

 supplement it by detailed work in each locality. For the convenience 

 of many who have not access to the annual reports of the United States 

 Geological Survey, the report includes a map and descriptions of the 

 principal folds in a region adjacent on the southwest. A number of wells 

 are producing gas in these two areas, but oil wells of importance have 



not been reported. * 



W. B. W. 



Ponca City Oil and Gas Field. By D. W. Ohern and R. E. Gar- 

 rett. Okla. Geol. Survey, Bull. No. 16, 191 2. Pp. 30, pis. 2, 

 ng. 1. 

 The Ponca oil and gas field is located in north-central Oklahoma near 



the Kansas line. It produced gas only until 191 1 when the first oil 



