INDEX TO VOLUME 23 



753 



Page 

 Gypsum, Variation of the optic angle 



witti temperature of 37, 726 



Hague, Arxold, Memoir of Samuel 



Franklin Emmons by 12 



— , on Committee on Correspondentship 35 

 Hahx. F. F. ; Notes on the Dictyonemas 



of New Brunswick 83 



Hall. Chiustopheb Webber, Bibliogra- 

 phy of 29 



— , Memoir of, by Newton H. Winchell . 28 

 Haxgixg valleys and their pre-Glacial 

 equivalents in New York ; J. W. 

 Spencer 47, 477-485 



— valley of Taughannock Falls 480 



Hawaii. Succession in age of the vol- 

 canoes of 747 



Hay. O. p. : Establishment of faunal 

 divisions among the vertebrates of 

 the Pleistocene 87 



— ; Remarkable specimen belonging to 



the genus Edestus 87, 212 



Hayes, C. Willard, quoted from his 

 study of the "Nicaraguan depres- 

 sion" 497 — 



Helderberg Front, Structure of the. . . 



50, 746 



Help-me-Jack Creek, Alaska 567 



Hershey, Oscar H. ; Geological recon- 

 naissance of northeastern Nicara- 

 gua 36, 75, 493-516 



— ; Some Tertiary and Quaternary ge- 



ology of western Montana, north- 

 ern Idaho, and eastern Washing- 

 ton 75, 517-535 



HiLGARD, E. W., Discussion on fan- 

 glomerate by 72 



Hill, R. T., "Plateau Plains" named 



by 713 



Hintox formation, Mississippian delta 



of Virginia 451 



Hitchcock, C. H. ; Tertiary deposits of 



Oahu 71 



HoLLAXD, W. J. ; Pre-Cretaceous Dino- 

 saurs 85, 204 



— ; Report on classification of freight 



rates on fossils 78 



HoLLiCK. Arthur, Vice-President Pale- 

 ontological Society, Opening ses- 

 sion called to order by 77 



Hovev. Edmuxd Otis, elected Secretary 



Geological Society for 1912 2 



HovEY, Horace C. and R. Ellsworth 

 Call ; Bibliography of Mammoth 

 Cave 51, 



Howe, Erxst, Geological section, Isth- 

 mus of Panama, discussed by 



Howell, Edwix E., Memoir of, by 

 Grove K. Gilbert 



HussAKOF, L. ; Cranium of the Pleura- 

 canthida; 



Ice scoring in a glacial climate. Extent 

 of 



Idaho. Early glaciation in northern . . . 



— , Valleys of Clearwater country 



IxsECTivORA ; William K. Gregory 



IxvERTEBRATE palcoutology. Titles of 

 papers on 



IROX ore (peculiar) from the Dunham 

 mine, Pennsylvania : W. S. Bayley. 



of the Lake Superior region, 



Progress of opinion as to the ori- 

 gin of the 51, 317- 



iRvixG. R. D., Work on Lake Superior 

 ores of 



Isthmus of Panama, Remarks on the 

 geological section of the 



JAGGAR, T. A., Jb. : Succession In age 



of the volcanoes of Hawaii 747 



747 



82 

 30 

 87 



541 

 530 

 532 

 192 



S4 — 



44 



324 

 .322 



82 



Page 

 Jaggar. T. a.. ,Tr. ; Structure of esker- 



fans experimentally studied. ... 51, 746 

 .ToHxsox. Douglas Wilsox ; Stabilltv 



of the Atlantic coast 49, 739 



Jurassic Saurian remains ingested 



within flsh ; C. R. Eastman 87 



Kaxsax drift and fossiliferous silt, 



Sioux Falls section 712 



, Sioux Falls section 143 



Kay, George F., .1. E. Carman Intro- 

 duced by 47 



Keith. Arthur, Delta deposits dis- 

 cussed by 4S, 745 



— elected Councilor Geological So- 

 ciety for 1912-1914 2 



— ; New evidence of the Taconic ques- 



,^ ^ion 35,720 



Kellogg system of river terraces 519 



Keyes. Charles R. ; Geographic cycle 



in an arid climate : should its de- 

 velopment be by wind or water?. . 



49, 537-562 

 Toyalane and Lucero ; their struc- 

 ture and relations to other plateau 

 plains of the desert 50. 713-718 



Kimball, .1. P., Segregation of iron ores 



first applied by 321 



KxowLTOx. F. H., quoted on the flora 



of the Raton field 604 



- — ; Some interesting new plants from 



Florissant, Colorado 88 



KoYUKUK-KOBUK region, Alaska... 563-566 



Kraus. E. H., elected member of Audit- 

 ing Committee 2 • 



— ; A'ariation of the optic angle of 



gypsum with temperature 37, 726 



KiJMMEL. H. B.. Sti-atigraphic study of 

 the x\ppalachian and Central States 

 with reference to the occurrence of 

 oil and gas discussed by 37 



— . Stability of the Atlantic coast dis- 

 cussed by 49. 741 



— , Delta deposits discussed by 48. 745 



Lake-shore deposits. Effect of rapid 



offshore deepening on 50, 746 



— Superior land district, Foster and 

 Whitney report on geology of 317 



Laxd forms. Technical explanatory 



treatment of 103 



Laxe, a. C. ; Dark scale of hardness. . . 



37, 725 



— : Demonstration of relative refrac- 

 tion 37, 725 



— , Paragenesis of the zeolites discussed 



by 38,727 



— . Stability of the Atlantic coast dis- 

 cussed by 49,741 



••I>aramie" formation (?), Colorado and 



New Mexico 607 



Lava flows. Region of ToyalanC^ and Lu- 

 cero 716 



— province. British East Africa, The.. 304 

 Lawsox. Axdrew C. elected Chairman 



Cordilleran Section 70 



Fanglomorate. a detrital rock at 

 Battle Mounlain. Nevada 72 



— - . Gecdogv of Steep Rock Lake by . 36, 722 



— : Geology of the Nevada Hills 74 



— , Miocene of the soutliern Coast Range 



region of California discussed by.. 72 

 — , Nomenclature of Faults discussed 



bv "^4 



— . Orthoclase as a vein mineral dis- 

 cussed by 72 



— ciuoted on Nicaraguan Tertiary rocks 



509-514 



— ; Section of the Shinarump 74 



