XXIV INDEX TO VOLUME IV 



PAGE 



Todd, J. E. Formation of the Quaternary Deposits of Missouri. Review by 



T. C. C. .-..-..-.-. 976 



Trias, Marine ............ ^85 



Tuktoo Glacier ---......-.. 584 



Tyrrell, J. Burr. Genesis of Lake Agassiz ...... gil 



Udden, J. A. Reviews. En resa till norra ishafvet sommaren 1892, foretagen 



med understod af vegastipendiet. Alex. Hamberg - - - 240 



Har det funnits mera ann en istid i Sverige ? N. O. Hoist - - 124 

 Istidens foraminiferer i Danmark og Holsten og deres betydning for 



studiet af istidens aflejringer. Victor Madsen - - - - - 119 



Om kvartara nivaforandringar vid Finsk-Viken. Gerard de Geer - - 982 



Om Lommalerans ilder. N. O. Hoist and J. C. Moberg - - - 123 



Unconformity and Folds - - - - - - - - - -351 



Unsymmetrical Drainage Basins ......... 661 



Upham, Warren. Preglacial and Postglacial Valleys of the Cuyahoga and 



Rocky Rivers. (Abstract) ---.-... 127 

 Wright, G. F., and. Greenland Ice-Fields and Life in the North Atlantic. 



Review by T. C. C. - - - - - - - - - - 632 



Upturning of Layers of Glacial Ice --...... 790 



U. S. Geologic Atlas, Chattanooga Sheet ....... 764 



Harpers Ferry Sheet .......... 758 



Kingston Sheet ........... 762 



Ringgold Sheet .......... 760 



Sewanee Sheet ........... 766 



Smartsville Sheet .......... 878 



U. S. Geol. Survey, Fifteenth Ann. Rept. ....... 652 



Sixteenth Ann. Report ......... 880 



Van Hise, C. R. Deformation of Rocks .... 195^ 312, 449, 593 



Summary of Current Pre-Cambrian North American Literature - 362, 744 



Variations of Glaciers --....-.--. 926 



Vaughn, T. W. Review : Fossil Sponges of the Flint Nodules in the Lower 



Cretaceous of Texas. J.A.Merrill - - - - - - - 112 



Veining of Glacial Ice ........... 782 



Velocity of Glaciers .... ...... 913 



Victor Kame Area ........... 138 



Viterbo Region ............. 826 



Volcanic Deposits of the Sierra Nevada ....... 883 



Vulsinite ............ 5^7^ 832 



Warren Peak ............39 



Washington, H. S. Italian Petrological Sketches ..... 541^ 826 



Magmatic Alteration of Hornblende and Biotite 257 



Water. Mechanical Action .......... 850 



Weathering, Principles of -------- - 704, 850 



Weed, W. H., and L. V. Pirsson. Geology of the Little Rocky Mountains - 399 

 Weller, S., and R. A. Davidson. Petalocrinus Mirabilis (n. sp.) and a New 



American Fauna - - - - - - - - -- 166 



Weller, S. Reviews : Geological Biology. H. S. Williams - - - 355 



