893 
INDEX TO VOL. IV. 
Adams, Frank, microscopical character 
of the ore of the Treadwell mine, 8H. 
Adobe (Russell) ;«r.. 
Age of the Tipton-run coal, I. C. White, 
25. 
Alaskan glacier, described by W. P. 
Blake, 03. 
Aldersou, Victor Clifton, Geology in the 
higii school, 284. 
AUotropic forms of silver 254. 
American Association for the Advance- 
ment of Science, W, 251, 256. 
Artesian wells in S. Dakota, 255; in the 
Archean in Minnesota, 392. 
Arehean geology of the region N. W. of 
lake Superior, Lawson, 59. 
Atmospheric condensation, a cause of 
solar heat. 183. 
Aztecs, used meteoric iron, Hensoldt, 37. 
Bailey, G. E., 2.54. 
Baldwin, Judge C. C, 2(57. 
Barrois, Prof. Charles, .50. 
Beachler, Chas. S., Crinoidea at St. Paul, 
Ind., 102. 
Bell, Dr. Robert, on the Huronian, 351. 
Bickmore, Prof. A. S., 192. 
Bigsbv, Dr. J. J., 344. 
Blake, Prof. J. H.. 52 
Blake, Prof. W. P., 228. 
Bowers, Dr. Stephen, 64; 391. 
Bristow, Henrv William, 192. 
Broadhead, Prof. G. C.The Missouri 
river, 149. 
Bryson, John, The terminal moraine 
near Louisville, 125. 
Burns, Col. Fielding, 2.54. 
Callaway, Charles, Secondary minerals 
at shear-zones, 310. 
Calvin, Prof. S., Iron butte, Montana, 
95. 
Cambrian, how divided, Matthew, 139. 
Camptonite dikes near Whitehall, N.Y., 
Kemp and Marsters, 97. 
Chalk in Arkansas, 357. 
Chamberlin, Pres. T. C, Rock-scorings 
of the great ice-invasions, 57. 
Chance. II. M.,2.>J. 
Chatard, T. M , Salt-making processes 
in the United States, 113. 
Chesapeake bav. Geology of, McGee. 113. 
Cincinnati rocks (The): what has been 
their physical history? N. W. Perry, 
326. 
Classiileation of Cambrian and Pre- 
Cambrian formations, Irving, HI. 
Claypole, Prof. E. W., 337. 
Comauchi^ series, 357 
Condensation theory of solar heat, 183. 
Conflagration theory of solar heat, 182. 
Cook, Dr. (ico. H., Sketch of life and 
work. Smock, .321. 
Cretaceous foraminiferal limestones, 
Hill, 174. 
Cretaceous mammals discovered. Marsh, 
108. 
Croll, James, 201. 
Crvstalline rocks, recent work on, Judd, 
177. 
Culver, Prof., Plans for irrigation in 
Dakota, 3S1I. 
Darwin, Prof. G. H.,201. 
Davenport public schools, natuial sci- 
ence in, 192. 
Davis, W. M., Triassic formation of the 
Connecticut valley, 112. 
Dawson, G. M., Notes on the Treadwell 
mine, Alaska, 84; nature of the Keewa- 
tiu rocks, 295. 
Delgado, Col. Joaqiiim Fillipe da Encar- 
nacao, Record <>i the I-ondon session 
of the international Congress of Geol- 
ogists, 44. 
Distribution of certain loess fossils, 
Keyes, 119. 
Earth, interior condition of, Le Conte, 
38. 
Editorial Comment. 
Some recent work upon the crystal- 
line rocks, 177. 
Some speculations on the origin of 
petroleum,. 371. 
Eiffel tower, 254. 
Etheridge, Robt. Jr., Fauna of the 
llawke^bury-Wianamatta series, 109. 
Ettingshauseh, Baron von, Tertiarv flora 
of Australia, 110. 
Evans, Dr. John, Unpublished report on 
Oregon, 6. 
Evans, M. C. .55. 
Excursion to Sudbury, Ontario, 2.56. 
Eyerman, John, Mineralogy of Pennsvl- 
vania, 309. 
Fence wall geology, Foerste, 367. 
Fischer, Moritz, Photographic survey of 
a state, 289. 
Foerste, Aug. F., Note taking and the 
use of maps, 229; Fence-wall geology, 
367. 
Fo.-^siLs, 
New species, by Ulrich, 21 ; Diphyphyl- 
lumsimcoense, Sherzer,93: New crin- 
oidea at St. Paul, Ind., Heachler, 102: 
Hawkesburv - Wiananiatta series, 
109: Tertiary flora of Australia, 110: 
distribution of in the loess, 119; 
Fishes and plants of the Atlantic 
Triassic, 187; Subgeneric groups of 
Naticopsis, 193: Ostracoda from 
