IDDIXCiS ILLINOIS 



141 



I 'age 



Iddings, J. v.. Observations at tlio Kihuu'a ("rnt(M- discussed by 24. 74 



— , Photo^n-apli of Yellowstone natural bridij;e by 21, •">-•■! 



— quoted on igneous rocks and flow-breccias 26, 401 



tbe litliopliysa' in the Obsidian ("lift splierulites 26, 2r)G 



— , Reference to "Igneous rocks" liy 37. -<'4 



— , Remarks on silicate melts by 27, 48 



— , Studies of Yellowstone Park rhyolites by 22, 111 



and Cross, Whitman. Distribution of allanite in tbe siliceous i.i,nieous 



rocks of the Rocky Mcmntains sliown by 22, 122 



ToiTAROD roLrion. Alaska, (Jeoloiiy of 27, 114 



Igneous coni])lex of lii.iih Titanimn. pbosphorus-bearins rocks of Ani- 

 lierst-Xelson cdunties. \'ini:inia : ThdUias 1.. Watson an<l Stephen 

 Tabor 24. r,.% G82 



— dike rocks from middle western Virginia, Chemical analyses of 24, ool 



in N'irjiinia, Chemical analyses table and table of norms of 24, •".•".l, 3.32 



, MineraloKi<"il :iiul textural characters of 24, 333 



— dikes in central western Virsiuia, I'etroloiiy of a series of 24, .302-.334 



— ma.unias. Two-jihase convection in 29. 101 



— rock of Starks Knot), Age of 24, 349 



— rocks 27, 625 



and therm.nl waters. Eocene 21. 104 



, Miocene 21, 106 



, Pliocene 21,107 



, Complex of alkaline 21, 33, 785 



, I )iamond HlU-Cumberland district 25, 449-475 



di.scussed by members 29, 1"1 



, Division of, into Atlantic and Pacitic branches uot warranted. . . 21, 114 



, Internal structures of 29, 100 



of District of Columbia 28, 155 



Yukon-Alaska l)oundary 25, 203 



, Pennsylvania I'iedmont pre-Camltrian 26, 81 



, L. V. Pirsson cited on 21. 109 



, Relative efficiency of normative and modal classifications of 30, 91 



■ within Yellowstone Park, Absaroka Range and the Wind River pla- 

 teau. Area of 22, 104 



— Triassic rocks near Gettysburg, Pennsylvania 27, 55 



Illinois, Alexandri;in i-ocks of 27, 305 



northeastern 26, 95, 155 



— and ]Miss(mri, Stratigraphy and jialeontology of the Alexandrian series 



in 24. Ill, 351-375 



— , Chester group in 27, 156 



— , Fairmont limestone (piarry in 26, 70 



— , Glacial erosion in central 26, 70 



— oil field ; F. II. Kay 28. 156 



fields of 28, 561, 655 



— , Sketch map locating Fairmont qu;irry with respect to limit of early 



Wisconsin glacier 26, 71 



— , Uplift in 29, 201 



