374 Scientific Intelligence. 



bulletin of the University of Texas on the Mineral Resources of 

 the State was mentioned in the February number (p. 224). The 

 present volume discusses a region of great extent and for a half- 

 century important for its stock raising. Attempts to reclaim it 

 for agriculture have not been successful, in consequence of 

 deficient water supply, and hence the importance for this region 

 and others similar of investigations such as those here presented. 

 The maps accompanying the report give for many localities the 

 depths of the water-level, in part from actual measurements by 

 the author, and in other cases as given by the owners or drillers 

 of the well. This makes it possible to predict, for extensive 

 areas, the depth of the water within some ten feet. The supply 

 of surface water, however, is limited and hence the problem of 

 conservation is essential. 



5. The Geography^ of the Fox-Winnebago Valley ; by Ray 

 Hughes Whitbeck, Pp. 109; 28 pis., 25 figs. Bulletin 42 of 

 the Wisconsin Geological and Natural History Survey, E. A. 

 Biege, Director, W. O. Hotchkiss, State Geologist. Madison, 

 1915. — The bulletins of the Wisconsin Survey are many of them 

 of a practical and educational character, treating of the industrial 

 geography of the state with details as to selected regions. Bulle- 

 tin 26, issued in 1913, was an introductory number given to the 

 geography and the industries of the State as a whole ; the 

 present volume is the first of the regional bulletins. It diseusses 

 the valley of the Lower Fox River and Lake Winnebago, includ- 

 ing its navigation, its cities and their industries, and also the 

 agriculture. An earlier bulletin was devoted to the peat indus- 

 tries of the State (see p. 225, Feb. 1916). 



6. Geology and Mineral Resources of Jefferson County, Ken- 

 tucky ; by Charles Butts. Kentucky Geol. Surv., 1915. Pp. 

 270, 65 pis., 3 text figs. — This work, the result of cooperation 

 between the Kentucky Geological Survey and the United States 

 Geological Survey, is one of the best county reports issued by 

 any state of the American Union. Louisville has long been 

 famous for the great variety of fine Paleozoic fossils which have 

 been collected by at least three generations of enthusiastic 

 workers out of its undeformed strata. The stratigraphy of the 

 Falls of the Ohio region has therefore often been described, and 

 now Mr. Butts, after going over most of the ground anew, pre- 

 sents all that is valuable, brought up to date and set forth in 

 great detail with excellent illustrations. The exposed strata 

 begin with the Richmond (Arnheim) of the Ordovician and con- 

 tinue with several interruptions into the higher Mississippian 

 (Spergen). All the breaks are described and their significance 

 pointed out. Faunal lists are given for each formation and many 

 of the guide fossils are illustrated, making the book of general 

 value for the greater part of the Mississippi valley. The report 

 closes with a statement of the mineral and water resources of the 

 county. c. s. 



