798 



BULLETIN OF TPIE GEOLOGICAL SOCIETY OF AMERICA 



509 



509 

 509 



25 



75 



I'age 

 Allen^ E. T., and Arthur L. Day ; Iso- 

 morphism and thermal properties 

 of feldspars, Reference to. . . . 165, 166 

 — , Fred. Eugene Wright, and J. K. 

 Clement ; Minerals of the compo- 

 sition MgSiO,, Reference to 166 



Allorhynchus heteropsis (Winchell), 

 Figure showing and description of. 



— macra (Hall), Figure showing and 



description of 



— n. gen 



Alamogordo, New Mexico, Deposit of 



gypsum sand near 



Amendments to the by-laws 19 



— to the constitution 19 



America, Geologic work of ants in 



tropical 450-496, 790 



American arid region. Subdivision of. . 544 



— Geographical Society of New York, 



Assistance rendered by 339 



— Geological Society, Questions dis- 



cussed of organizing 743 



— Geologist" magazine, Publication of. 744 



— Philosophical Society, Overture from, 



on Antarctic exploration 



Amphibians (Temnospondyte) from the 

 Texas Permian, Principal character 

 of the Chelydrosaurua, a suborder 



of 



Amphibolite schist, Occurrence of 747, 751 

 Atwood, W. W., cited on glaciation in 



the Uinta and Wasatch mountains. 520 

 Anatomy and physiology in extinct or- 

 ganisms ; Charles R. Eastman and 



Rudolph Ruedemann 74 



Anderson^s methods of photography in 

 vertebrate paleontology ; H. F. Os- 



born 75 



Andrews, C. L., cited on recession of 



Muir glacier 368 



Andrews, E. C, et al., Ice-flood period 



named by 718 



— , Reference to his paper "Ice-flood hy- 

 pothesis of the New Zealand sound 



basins" 720 



Animals feeding on termites 477-479 



Annual dinner of Society 27 



Ant-eater, Description of 477 



Ant faunas of South America 454 



— hills. Size of 464-471, 482, 483 



— structures 463-476 



Ants as food 462 



— , Attacks on man by 457-459 



— , Beneficial 459-462 



— , Destructiveness of 455 



■ — , Earth moved by 493 



— , Geologic work of 493, 494 



— , Geologic work of in tropical Amer- 

 ica ; J. C. Branner 450-496, 790 



— , Photographs of mounds in Brazil 



made by. See plate 35. 



— , Relations to the soil of 474-476 



— , Termites or white 476-496 



Antarctic exploration, Overture from 



American Philosophical Society on. 25 



— land, Tertiary crustal movements on. 218 



— research. Resolution concerning 28 



Anticline (local) in the Chagrin 



shales. Analysis of 773 



Anticlines (local) in the Chagrin 

 shales at Cleveland, Ohio (extem- 

 pore) ; Frank R. Van Horn 24, 771 



, Description of 771 



, Local geology of 771 



, Probable cause of the 



flexures in 771 



— , Some instances of flowing wells on ; 



F. G. Clapp. (Abstract.) 24,770 



Anticosti and Mingan islands, Fossils 



of 678-716 



647 — 



Page 

 Anticosti and Mingan islands, Geologic 



sequence in 681 



, Ordoviclc-Siluric section of 



677-716 

 , Thickness and extent of Or- 



dovicic-Siluric of 678 



Anticosti group, Hudson River group 



and 679 



, Niagara period and 680 



^island, Beatrirea beds of 697 



, Becsie River formation 705-708 



, Chicotte formation 715, 716 



-, Cincinnatic system, Gamachian 



series 700-704 



, Richmondian series of. 694-700 



• , Clorinda lyarrandii beds of 705 



, Dino'bolns beds of 696 



— - — , Dinorthis porcata beds of 701 



, Early Richmondian beds of 696 



, Ellis Bay formation, Correlations 



of 704 



, First marked coral reef beds of. . 702 



, Fossils of Ellis Bay formation 



702-704 



, Gun River formation 708-713 



, Hormotoma gigantea beds of . . . . 702 



, JJyatella congesta beds 709 



, Jupiter River formation 713-715 



, Oncoceras futile beds of 714 



, Ordovicic fossils of 694 



system, Correlation of 694 



, Macastey black shale of . . . 693 



, Parastrophia reversa beds of . . . . 701 



, Phoenopora expansa beds of 705 



— ■ — , Rhynchonella fringill'a glacialis 



beds 710 



, RUynchotrena perlamellosa beds 



of 697 



, Siluric system, Niagaran (Anti- 



costian) series 704 



— — , Stricklandinia lens beds of 714 



succession. Systems of 693-706 



, Table of strata of geologic sec- 

 tion of 684, 685 



, The long-ranging species of, List 



of 683 



; Triplecia ortoni beds of 713 



— — , Zones and fauna of Ellis Bay 



formation 701-704 



Anticosti strata, Divisions of 679 



Appalachian mountains of Maryland ; 



Charles Swartz 24 



Appalachians, northern, Present and 

 future of natural-gas fields in the 



34, 788 



Aqueous sand types, Description of 632-638 



Archwoscyphia minganese (Billings) ob- 

 tained by James Richardson from 

 Romaine island 687 



Arch Creek natural bridge, near Miami, 

 Florida, Description of and view 

 showing. See plate 26 331 



Archipelago, Map of East Indian, Fig- 

 ure 8. 



Arid climate, Peculiarities of 568 



— cycle in mountainous regions. Evolu- 



tion and conditions of 589-592 



initiated in a plains region. Con- 

 ditions of 592-597 



— lands of America, Defiation of.. 580-585 



— physiographic stages. Profile of.... 596 



— region of America, Rio Colorado, Rio 



Grande, and Rio Pecos, The large 



perennial rivers of 575 



, Subdivisions of 544 



— • — , Arroyo-running (dry creeks) of.. 575 



, Comparative effects of corrasion 



and deflation in 585 



, General corrasive phenomena In . 571 



