INDEX TO VOLUME XII 759 



PAGE 



Farewell Lecture by Prof. Eduard Suess, on resigning his Professorship. 



Translated by Charles Schuchert .--___. 246 



Farrington, Oliver Cummings, Gems and Gem Minerals. Review by H. L. - 63 

 Fayalite, Wide-Spread Occurrence of, in Certain Igneous Rocks of Central Wis- 

 consin. Samuel Weidman - - - - - - - "551 



Fort Union, Laramie and Fort Union Beds of North Dakota, Frank A. Wilder 290 

 Fracture Valley System. J. P. Iddings -------94 



Fuller, M. L., Ice Retreat in Glacial Lake Neponset and in Southeastern Mass. 181 



Gems and Gem Minerals. Oliver Cummings Farrington. Review by H. L. - 63 

 Geographic Influences in American History. Albert Perry Brigham. Review 



byH. H. B. - - - - - - - - - - - 176 



Geology of Monadnock Mountain, N. H. Joseph H. Perry - - - . j 



Geological Notes on the Vicinity of Banff, Alberta. I. H. Ogilyie - - 408 

 Geology of Miller Co., Mo. Sydney H. Ball and A. F. Smith. Review by 



H.L. 



470 



Gilbert, G. K., Systematic Asymmetry of Crest Lines in the High Sierra of 



California --------... ^79 



Glacial and Post-Glacial History of the Hudson and Champlain Valleys. 



Part I. Charles Emerson Peet - - - - - - - -415 



Part II - ------...-. 617 



Glacial Lake Neponset, Ice-Retreat in, and in Southeastern Mass., M. L. 



Fuller ----------.. 181 



Glacier, Arapahoe in 1903. Junius Henderson ------ ^o 



Glaciers, Canadian, Effect of Debris on Retreat of. I. H. Ogilvie - - 722 



Glaciers, Variations of, IX. Harry Fielding Reid ------ 252 



Gordon, C. H., Pyroxenites of the Grenville Series in Ottawa Co., Canada - 316 



Granites of North Carolina. Thomas L. Watson ------ ^73 



Great Lakes, The Contact of the Archean and the Post-Archean in the Region 



of. A B.Willmott ---------- 40 



Hawaii, An Occurrence of Trachyte on the Island of. Whitman Cross - 510 



Henderson, Junius, Arapahoe Glacier in 1903 ------ 30 



Herrick, C. L., A Coal Measure Forest Near Socorro, New Mexico - - 273 



Hubbard, George D., An Interglacial Valley in Illinois - - - - 152 



Hudson and Champlain Valleys, Glacial and Post-Glacial History of. Charles 



Emerson Peet ---------- ^j^^ gj^ 



Ice-Retreat in Glacial Lake Neponset and in Southeastern Mass. M. L. Fuller 181 



Iddings, J. P., Fracture Valley System - - - - -- - - 94 



Quartz-Feldspar-Porph}Ty (Graniphyro Liparose-Alaskose) from Llano, 



Texas ------------ 225 



Interglacial Valley in Illinois. George D. Hubbard ----- 11^2 



Irrigation, F. H. Newell. Review by L. H. Wood ----- 62 



Iron, Baraboo Iron-Bearing District. Samuel Weidman. Review by R. D. S. 564 

 Irving, J. D., Economic Resources of the Northern Black Hills. Review by 



W. D. S. - - - - - - - - - - - - 661 



