INDEX TO VOLUME 27 



727 



Page 

 Homocline and monocline ; Reginald A. 



Daly 89 



IIorne, J., and B. Peach cited on pe- 

 trography of Sailmhor rocks 564 



.Reference to "The Silurian 



rocks of Britain" by 365 



■ — ; "The geological structure of 



the northwest highlands of Scot- 

 land" of 562 



— ■ cited on marine fauna 365 



Horse, Pliocene monodactylous 151 



Horses of Pacific coast, HippaiHon-like . 171 



Hostetter, J. C, and R. B. Sosman; 



Ferrous iron content and magnetic 



properties of the natural oxides of 



iron as an index to their origin and 



history 60 



Hotchkiss, W. O., cited on Cambrian 



sandstone at Ablemans, Wisconsin. 459 

 Howchin, , cited on tillites of Aus- 

 tralia 186 



Howe, A. B., Analyses by 642 



Hubbard, , cited on Keweenaw se- 

 ries 94 



van Huene, P., cited on Ordovicic of 



Dalarne 604 



studies of Esthonia 590 



Hull, , cited on theory of Carbon- 

 iferous sequence 493 



Hume, Dr, W. F., cited on "Character- 

 istics of Egyptian deserts" ....... 57 



Hunt, T. Sterry, cited on cores 74 



Hunt, W. F., and E. H. Kraus ; Vari- 

 able composition of melanochalcite. 61 

 Huntington, Ellsworth : Glaciation 

 and stormy period of tbe fourteenth 



century 67 



Htjronian ice age 186 



Hypersthene-andesine syenite 197 



— syenite, Analyses of 200. 202 



— ■ — and related rocks of the Blue 



Ridge region, Virginia ; Thomas L. 



Watson and Justus H. Cline 193 



■ compared with charnockite 218 



— • — pyroxene syenite 212 



Iberian peninsula of Ordovicic times.. . 581 



Ice age, Huronian 186 



, Late Precambrian 186 



, Permocarboniferous 184 



— ■ — , Pleistocene 183 



— body in relation to land uplift, Ref- 



erence by H. L. Fairchild to 249 



Idaho, Stratigraphy of Beckwith and 



Bear River formations in 70 



Idaho - Wyoming, Geologic map of 



Wayan quadrangle 65 



Iddings, J. P., cited on monzonite and 



granodiorite 204 



— , Reference to "Igneous rocks" by. . . . 204 

 — .Remarks on coral-reef problem by.. 46 



— ■ — ■ — - silicate melts by 48 



Tditarod region, Alaska, Geology of . . . 114 



Igneous rocks G2."i 



— ■ Triassic rocks near Gettysburg, Penn- 

 sylvania 55 



Illinois, Alexandrian rocks of 305 



— , Chester group in 156 



Ilmenite-apatite gabbro 228 



Importance of "coral reefs" and reef 

 deposits in the formation of Paleo- 

 zoic limestones; Thomas C. Brown. 1-1 1 



— — - water as a magmatic constituent ; 



George W. Morey 50 



Indian Reservation, Geologic map of 



Fort Hall 64 



Influence of Silurian-Devonian cli- 

 mates on the rise of air-breathing 

 vertebrates ; Joseph Barrell. ... 40, 3S7 



Page 

 International geological excursion in 



1913, Reference to 113 



Invertebrate fauna, Marine Triassic . . 172 

 Invertebrates, Rank of mutations and 



submutations among 148 



— ■, Relation of vertebrate faunal zones 



to 172 



Iowa, Kansan drift in 115 



Iron, Mineral hydroxides of 61 



— ore, Oriskany 64 



■ — ■ oxides, Ferrous content and mag- 

 netic properties of 60 



Iroquois Lake's flooding on south shore, 



Reference by H. L. Fairchild to... 247 



— ■ plane 242 



Irving, R. D., cited on Keweenaw se- 

 ries 94, 99 



Isobases of Pleistocene uplift, Outline 



map of 253 



— , Reference by H. L. Fairchild to 237 



Italian volcanoes, Saline fumarole de- 

 posits of 61 



Ives, , Newberry explored the Colo- 

 rado River with 493 



Jacalitos formation at Coalinga, Cali- 

 fornia 172 



Jackson, , cited on Keweenaw se- 

 ries 94 



Jaggar, Dr. T. A., cited on "Pele's 



Tears" 53 



Jahn, Jaroslav J., Reference to "Geo- 

 logische exkursion im Alteren palae- 

 ozoikum mittelbohmens" of 584 



Jamtland, Ordovicic of 608 



Jannasch, P., Analyses by 207 



Johnson, Douglas W., Armin K. Lo- 



beck introduced by 108 



— cited on local glaciation 672 



phenomena in Adirondacks re- 

 gion 650 



— ; Physiographic notes on the White 



Mountains 10S 



Johnson, John ; Some factors which 

 affect the deposition of calcium car- 

 bonate 49 



Johnson, J. E., Acknowledgments to... 204 

 Johnson, H. R., Thanks rendered to. . . 679 

 Jointing, Photograph of pre-Onondaga . 74 



Jones, , cited on chemical evidence 



regarding Pyramid Lake 67 



Jordan, D. S., cited on respiratory or- 

 gan of amphibian 41S 



— , Reference to "A guide to the study 



of fishes" by 418 



Jukes-Browne, A. J., cited on Lower 



Old Red in South Wales 367 



■ — ■ monoclines 91 



Old Red Sandstone... 351.383-384 



— ■ on Lingula flags and Heneuian. 557 



— , Reference to "The building of the 



British Isles" by 351, 367, 382 



Jurassic time, Discussion of 507 



Kalm. , cited on measurement of 



Niagara Falls 78 



— cited on Paleozoic organic remains 



near Rabiick 585 



Kansan drift in Iowa 115 



Katz, F. J., and G. C. Martin, Refer- 

 ence to "A geologic reconnaissance 

 of the Iliamna region, Alaska," of. 



097, 700 



Kay. George F. ; Some features of the 



Kansan drift in southern Iowa .... 115 



Kaysf.r, , Reference to "Lehrbuch 



der Geologischen Formationskunde" 



of 556 



