REVIEWS 9 1 



erosion influenced, in its topographic results, by the strong jointing of 

 the rock of the region. This view, however, does not preclude the 

 glaciation of the valley, but ascribes to the ice a very insignificant part 

 in its excavation. R. D. S. 



A Record of the Geology of Texas for the Decade ending December 

 ji, 1896. By Frederic W. Simonds, Ph.D. Reprint from 

 Vol. Ill of the Tra?isactions of the Texas Academy of Science. 

 [Austin?], August, 1900, pp. 280. 



In 1887 the U. S. Geological Survey published Bulletin No. 45, by 

 Professor R. T. Hill, upon "The Present Condition of Knowledge of 

 the Geology of Texas." Although that bulletin was not a bibliography 

 in the ordinary meaning of the word, it mentioned the chief publica- 

 tions upon the geology of the State of Texas up to 1886, and gave the 

 general results of the work of the authors. The present volume by 

 Dr. Simonds is an annotated bibliography covering the succeeding ten 

 years. That particular decade has been the most fruitful period in the 

 history of geological investigation in the State of Texas, and, as a con- 

 sequence, Dr. Simonds' list is the most important one that could have 

 been made of any limited period. 



No one who has attempted a piece of bibliography will fail to 

 appreciate this valuable contribution to geologic literature. Such pub- 

 lications represent a great deal of dead-work, much of it of a dreary 

 kind. But Professor Simonds has rendered a genuine service both to 

 the people of Texas and to the science of geology by bringing these 

 titles together and giving a resume of the contents of each paper. As 

 a rule but few persons know just what has been published upon the 

 geology of a given state, or where to lay hands upon it. This list fills 

 the want, so far as Texas is concerned during the period 1 886-1 896. 



The titles are arranged according to the alphabetic order of the 



authors, and there is an index of both authors and subjects at the end 



of the volume. 



J. C. Branner. 



