290 REVIEWS 



It is the discussion of such difficult but crucial points that the reader 

 seeks in vain in the final report. Passing in review the whole history of 

 great earthquakes, it would seem remarkable, indeed, if the cause of one 

 were not the cause of most, if not all, such movements of the crust. A 

 criticism of the report, which has been made by several reviewers, is that 

 it has ignored earlier work; and, excepting only the Mallet conception of 

 isoseismals, it seems that the report might have been written in its present 

 form if no report upon any earthquake had ever been published. 



Repetition of a recent triangulation by the U.S. Coast and Geodetic 

 Survey was made subsequent to the earthquake and revealed important 

 changes in the location of monuments. The report upon this resurvey 

 by Messrs. Hayford and Baldwin is of very great interest, since a compre- 

 hensive retriangulation after a destructive earthquake has been made before 

 in but a single instance — that of the great Assam earthquake of 1897. No 

 attempt can be made in the compass of this review even to mention the many 

 important subjects which are treated in the report. 



W. H. H. 



University Geological Survey of Kansas. Vol. IX. Oil and Gas 

 Report, 1908 [1909].' Pp. 600; pis. and maps, no. 



The Upper Carboniferous of Kansas, because of the abundant and 

 beautifully preserved fossils which it furnishes; because of the thickness 

 of its exposed section and the regularly alternating structure of limestones 

 with shaly or sandy beds, and because of the distinguished and historic 

 names which are associated with the literature that has grown up about 

 it, has become in some measure a standard or reference section for inverte- 

 brate paleontologists when dealing with the Upper Carboniferous of the 

 United States. Real additions to our knowledge of this series, therefore, will 

 be of interest to all geologists and especially to those who are engaged in 

 stratigraphic paleontology. The latest volume of the University Geologi- 

 cal Survey of Kansas, however, contains matter for all tastes. It is divided 

 into eleven chapters, each of which Constitutes a more or less distinct 

 paper dealing with the wide range of subjects which the geology of Kansas 

 naturally presents. The first chapter comprises a geological and historical 

 account of the discovery of oil and gas (pp. 5-41). It was written by 

 Erasmus Haworth. The second and third chapters are jointly by Erasmus 

 Haworth and John Bennett, and give the history of field work in Kansas 

 (pp. 42-56) and a discussion of the general stratigraphy (pp. 57-160). 

 The three succeeding chapters are by Erasmus Haworth and are entitled, 

 respectively, "Detailed Geology of Oil and Gas" (pp. 161-79), "Life 



