Index. 
397 
Lakes, Arthur, Extinct volcanoes in Col- 
orado, 38; Colorado ore deposits 57; 
Report of the School of mines on the 
coal deposits of Colorado, 312. 
Lapparent, A de, 209; 380. 
Leidy, Jos., 388. 
Laurentian as applied to a Quaternary 
terrane, James. 'AK 
Laurentian and Newark, as geological 
terms, C. H. Hitchcock, 197. 
Lawson, A. C. Geology of the Rainy lake 
region. 55; 119; Copper in the Animike 
rocks, 174. 
Leidy, Joseph, Mammalian remains 
from the southern states, 314. 
Leo Lesquereux, Orton, 284. 
Lerch, Dr. Otto, on the Concho country, 
321. 
Lesley J. P., Dictionary of the fossils of 
Pennsylvania, 53;38G: 387. 
"Level of no strain." 83, 190. 
Leverett, Frank, 123. 
Levy, A. Michel, 62. 
Low, A. P. Explorations in Hudson's 
and James bays, 242. 
Lower and Middle Taconic of Europe 
and Nonh America, Marcou, 357. 
M 
Makingof Pennsylvania, Claypole, 225. 
Mammalian remains from the southern 
states, Leidy, 314 
Maquoketa shales, and the Cincinnati 
group, Jos. F. James, 335; 394. 
Marcou, Jules, Triassie flora of Rich- 
mond, Va., KiO; The Am. Xeocomian 
and Gryphfea pitcheri, 315; The Lower 
and middle Taconic of Europe and 
North America, 357. 
Marcy, Captain Randolph B., on the 
Witchita mountains, 72. 
Marsh, O. C. Cretaceous reptilian forms 
181 ; 381. 
Marsters, V. F. Triassie traps of Nova 
Scotia. 140 
Martin, K. 209. 
McCreery, J. M. Causes of the extinction 
of species. 100. 
McCounell, R. G. 119. 
McGce, W. J. 120. 
Metamorphisra of rocks, Irving. (A) 5G. 
Miller, S. A. No. Am. Geology and pal- 
eontology, 52; corrections by Herrick, 
253. 
Minerals. 
Wurzilite. 63; gold and silver produc- 
tion in 1889, 126; Rustless iron, 126; 
Petroleum in Brazil and in Pennsyl- 
vania, 126; Natural gas, Freeborn, 
Minn, 128; In Ohio and Indiana, 388; 
Copper in tlie Animike, 174; In 
British Columbia, 247; Metagado- 
linite, 256: Group of meteorites, 256; 
Mines and mining of lake Superior, 
Ingrtll, 242. 
Minnesota geological Survey. 17th an- 
nual report, N. H. Winchell, 58. 
Mud eruption in Asia, 191. 
Murchison, R. I. The Silurian system 
of rocks, 8Q. 
N 
Nantucket, Geology of, Shaler, 111. 
Nettleroth, Henry, Kentucky fossil 
shells, 107. 
Neumayr, M., 209; 380. 
Newberry, J. S. 118; Devonian plants 
from Ohio, 184; 381; 384. 
New Brunswick, Report of Bailey and 
Innes, 246. Report of R. Chalmers, 
247. 
New Lamellibranchiata, Ulrich, 270 
North American geology and paleontolo- 
gy, Miller, 52. 
Notes on a Kansas salt mine, Hay, 65. 
Ontario, economic geology of. Bell, 238. 
Origin and outlines of the Bermudas, 
Fewkes, 88. 
Orton, E., 63; 119; Sketch of Leo Lesquer- 
eux, 284. Trenton limestone as a source 
of petroleum and gas, 388. 
Ouachita mountains, 70. 
Owen, Richard, 320. 
P ackard, A. S., Attempt to explain glac- 
ial lunoid furrows, 104. 
Patent water-witch, 256. 
Peet, Stephen D., Mr. Cresson and the 
Delaware river dwellings, 188. 
Phil, meeting of the International Con- 
gress of Geologists, 319; 379. 
Petroleum in Penn.sylvauia, 126. 
Phil, meeting of the International Con- 
gress of Geology, 319, ;379. 
Phosphate in Florida, 192. 
Potomac or younger Mesozoic flora, Fon- 
taine, 315. 
Powell, J. W.,383. 
Preglacial channels at the falls of the 
Ohio, Brvson, 186. 
Prestwich," Prof. Jos., 208; 380. 
Proctor, John R., 255. 
Putnam, F. W., 123. 
Q 
Quebec group, geological history of. 
Hunt, 212. 
Quebec. Report of R. W. Ells on the 
province of, 243. 
Quenstedt, Prof, von, 320. 
Quicksilver deposits of the Paciflc slope, 
Becker, 178. 
R 
Rainy lake region, geology of, Lawson, 
55 
Recent publications. 61, 114, 317, 391. 
Renevier, E. 209. 
Rivers and valleys of Pennsylvania, 
Davis, 60. 
Rocks. 
Metamorphisra of, 56; Silurian sys- 
tem of, 80; Subaerial decay of, 110; 
From the West Indies, 183; Group of 
Meteorites, 2.56. 
Rowley, R. R. Batoerinus calvini, new 
crinoid, 146. 
RutFner, W. H. Land of the Buena Vista 
Company, 53. 
Russell, I. C, Subaerial decay of rocks 
and origin of the red color of certain 
formations, 110; 118. 
s 
Salt range, trilobites in the Neobolus 
beds. King, 1S3. 
Santa Barbara channel, notes on the 
geology, Yates, 43. 
Schoolcraft, Henry Rovve, 1. 
School of mines of Colorado, report of, 
Lakes, 312. 
Sea-level, its dependence on superficial 
