DISCOVERY DONNELLY 83 



Page 

 Discovery of tliiorite iu the OriTovieian limestone of Wisconsin ; It. M. 



Bagg 29, 104 



-the Oxfordian in western Cuba ; B. lirown and M. O'Connell. . . . 30, ir)2 



Diseases of tlie niosasaurs ; II. L. Moodio 29, 147 



Dispersal center, Effect of remoteness from 24, 287 



— of hinuan race, Theory of centers of 24, 283 



Di.sxdroiiJiidic, F.-iniily new 21, 277 



Dissorophiis iinilticiiictHS, Part of slieleton found 21, 277 



DiSTRiiiUTiON and inferred migration of American Middh" and I'ppt'i" 



Devonic corals ; Amadeus W. Graban 27, 147 



District of Columbia, Igneous and nietamorphic rocks of 28, 155 



DiTTMAR, W. ; Mean table of seventy-seven analyses of ocean water. . . 22, 242 

 Divergent ice-flow on the plateau northeast of the Catskill Mount.-uns 



as revealed by ice-molded topography : J. L, Rich 25, 68 



Diversion of the Montreal River ; Robert Bell 21, 21, 762 



Diversions and correlations of the I>unk;ird series of Ohio; Clinton R. 



Stanffer 27, 86 



Dixon, Dr. Samuel G., visiting geologists and paleontologists welcomed 



to the Academy by 26, 5 



Doelter, C, cited on experimental geology 29, 175 



Dole, R. B., Chemical analyses by 28, 034 



— cited on rate of denudation 28, 821 



— , Precipitation of calcium carbonate and formation of oolites, Refer- 

 ence to 26, 58 



DoLLO, Louis, cited on dipnoans 27, 108 



• the Danien and Montien 25, 336 



the Montian 25, 396 



— of Belgium 25, 394 



— , Reference to "Sur la Phylogenie des Dipneustes" by 27, 409 



Dolomite, Coralline alga? in an Ordovician 24, 115, 607 



— , Contribution to origin of 30, 114 



— , Mendota 27, 177 



— of Missouri, Glauconite in 29, 104 



— or limestone a tlux for basalt 21, 109 



— , Origin of 25, 66 ; 28, 153, 431 



— , Relation of calcite to 27, 447 



— , Why Bighorn is a 24, 618 



Dolomites, Are the fossils of, indicative of shallow, highly saline, and 



warm seas? ; Stuart Weller 22, 93, 227 



— , Association with alkaline rocks of 21, 91 



— , New points on origin of ; F. M. Van Tuyl 26, 62 



— of western Wyoming, Bighorn and Jefferson 24, 115, 607 



Dominantly fluviatile origin, tuider seasonal rainfall, of the Old Red 



Sandstone ; Joseph Barrell 27, 39, 34.1 



Don River beds, Character of fossils found in 25, 210 



glacial deposits 25, 200 



Donnelly iron ore 29, 351 



