VI . CONTENTS 



NUMBER V. 



PAGE 



Moraines of Recession and Their Significance in Glacial Theory. 



Frank Bursley Tajdor --------- 421 



The Eruptive Rocks of Mexico. Oliver C. Farrington - - - 466 



The Stratigraphy of the Potomac Group in Maryland. William 



Bullock Clark and Arthur Bibbins ------- ^yg 



Studies for Students : Comparative Study of Palaeontogeny and Phylog- 



eny. James Perrin Smith --------- 507 



Editorial ------- ^25 



Reviews : The Bedford Oolitic Limestone in Indiana, b}' T. C. Hopkins and 

 C. E. Siebenthal (review by J. C. Branner), 529 ; Ancient Volcanoes 

 of Great Britain, by Archibald Geikie (review by J. P. Iddings), 531 ; 

 The Submerged Valleys of the Coast of California, U. S. A., and of 

 Lower California, Mexico, by George Davidson (review by W.S.Tan- 

 gier Smith), 533. - - " - - - - - - - - 529-534 



Recent Publications ---------- 535-540 



NUMBER VI. 



The Newark System of New Jersey. H. B. Iviimmel - - - - 541 



The Topography of California. Noah Fields Drake - - - - 563 

 A Comparative Study of the Lower Cretaceous Formations and 



Faunas of the United States. Timothy W. Stanton - - 579 



Correlation of the Devonian Faunas in Southern Illinois. Stuart 



Weller ------------ 525 



Editorial -----..---.- 606 



Reviews: Geological Survey of Canada, Annual Report, Vol. VUI, 1895, 

 by G. M. Dawson, Director, Ottawa, 1897 (review by T. C. C), 641 ; 

 Iowa Geological Survey, Vol. VI (review by T. C. C), 642 ; Geology 

 and Natural Resources of Indiana, Twenty-first Annual Report 

 (review by T. C. C), 644 ; Geological Survey of Alabama, by Eugene 

 Allen Smith, State Geologist (review by T. C. C), 646 ; First Report 

 of the Geological Commission of the Colon}' of the Cape of Good 

 Hope (review by T. C. C), 647 ; North Carolina and Its Resources, 

 issued by the State Board of Agriculture (review by T. C. C), 648 ; 

 Proceedings of the Iowa Academy of Sciences (review by T. C. C), 

 648 ; Bulletin of the Minnesota Academy of Natural Sciences, Vol. 

 IV,> No. I, Part I, C. W. Hall, Editor (review by T. C. C), 648 ; 

 Proceedings of the Davenport Academy of Natural Sciences, Vol. VI, 

 1889 to 1897 (review by T. C. C), 649 ; Stone Implements of the Poto- 

 mac-Chesapeake Tidewater Province, by William H. Holmes (review 

 by T. C. C), 649 ; Glacial Observations in the Umanak District, 

 Greenland, by George H. Barton, Report B. of the Scientific Work of 

 the Boston Party of the Sixth Peary Expedition to Greenland (review 

 by T. C. C), 650 ; Seventeenth Annual Report of the United States 

 Geological Survey, Parts I, II and HI, by Charles D. Walcott, Director 

 (review by T. C. C), 651. --------- 641-652 



