328 Scientific Intelligence. 



II. Geology and Natural History. 



1. United States Geological Survey. — The following publica- 

 tions have recently been received: 



Twenty-Second Annual Report, 1900-1. Pt. IV. Hydro- 

 graphy. 669 pp. 65 pis., 244 figs. — Mr. Newell, chief of the 

 Division of Hydrography, reports on the progress of stream 

 measurements throughout the United States (pp. 9-506). A. P.- 

 Davis's paper on the Hydrography of the American Isthmus pre- 

 sents the facts regarding the physiography, rainfall, drainage, etc , 

 along the lines of the Nicaragua and Panama canals. The High 

 Plains and their Utilization (pp. 637-667), by Willard D. 

 Johnson, is the conclusion of a valuable contribution to physiog- 

 raphy begun in the twenty-first annual report. 



Masontoavn-Uniontown Folio, Pennsylvania, No. 82 ; by 

 M. R. Campbell. 21 pp. with maps and sections. — The first of 

 a series of new maps of the Pittsburg Coal District shows 

 marked improvement over previous work. It is probably the 

 most accurate piece of geologic mapping yet published. The 

 economic geology includes coal, oil and clays ; the well-known 

 abandoned channels of this region are explained as consequences 

 of local ice dams. 



Ditney Folio, Indiana, No. 84 ; by M. L. Fuller and G. 

 H. Ashley. 8 pp. with maps and sections. — The Ditney area is 

 part of the Illinois-Indiana coal basin. It is a region of hori- 

 zontal rocks moderately dissected and glaciated. 



Ellensburg Folio,No. 86 ; by Geo. Otis Smith (Washington, 

 D. C, 1903, 7 pp. text). — The area described geologically in 

 this folio consists mainly of basaltic outflows of Neocene age 

 which cover the older rocks. These have been in part eroded 

 and upon them have been laid down gravels, fluviatile deposits, 

 alluvium, etc. of Neocene and Pleistocene time, with andesitic 

 outflows of the latter period. The mapping is an excellent piece 

 of careful work and the descriptive text is clear and readable. 

 In the field work Dr. Smith was assisted by Mr. F. C. Calkins. 



l. v. P. 



Bulletin No. 200. Reconnaissance of the Borax Deposits of 

 Death Valley and Mohave Desert ; by M. R. Campbell. 22 pp., 

 1 map. — The borax of the Death Valley region occurs in a regu- 

 lar stratum interbedded with semi-indurated sands and clays. 

 The mines at Borate are the chief producers of borax and boracic 

 acid in the United States. 



Bulletin No. 201. Results of Primary Triangulation and 

 Primary Traverse (1901-02); by Messrs. Wilson, Renshawe, 

 Douglas and Goode. 



Bulletin No. 202. Gold and Silver in Shales from Western 

 Kansas; by Waldemar Lindgren. 19 pp. — In spite of published 

 accounts to the contrary, Dr. Lindgren shows that the Kansas 

 shales do not contain gold or silver in paying quantities. 



Bulletin No 204. Fossil Flora of the John Day Basin, 



