1 ^s The American Geologist. August, 1894 
W. M. Davis; the ancienl strait a1 Nipissing, F. B. Taylor; Microsdopic 
structure of silicious oolite, E. O. Hovey. 
///. Papers in Scientific Journals. 
American Journal of Science, 3, vol. 47; May, 1894, contains: Obser- 
vations <>n ill" derivation and homologies of some articulates, J. I>. 
Dana; Crystallization of herderite, S. L. Penfleld; Additional note on 
leucite in Sussex Co., X. .1.. .1. F. Kemp; Phonolitic rocks from the 
Black Hills. L. V. Pirsson; General structure of the main axis of the 
Green Mountains, C. L. Whittle: Notes on apparatus for the geological 
laboratory, .1. E. Wolff; Diversity of the Glacial drifl along its bound- 
ary, Warren Upham; Gases in Kilauea, W. Libby, Jr.; Presence of wa- 
ter in topaz. P. Jannasch and .1. Locke; Chemical composition and re- 
lated physical properties of topaz, S. L. Penfleld and .1. C. Minor, Jr.: 
Restoration of Elotherium, (>.('. Marsh: New Miocene mammal, O. C, 
Marsh. 
American Journal of Sciencer 3, vol. 47, June, 1894, contains: Notes 
from the Bermudas, Alex. Airassiz: Discovery of Devonian rocks in Cal- 
ifornia. .1. S. Diller and ('has. Schuchert; Beaver Creek meteorite. E 
E. Howell, W. F. Hillebrand. and G. P. Merrill: On allanite crystals 
from Franklin Furnace. X. .1.. A. S. Eakle; On argyrodite and a new 
sulphostann ate of silver from Bolivia, S. L. Penfleld; Notes on the gold 
(ires of California. H. W. Turner: A recent analysis of Pele's hair and 
a stalagmite from the lava caves of Kilauea. A. H. Phillips. 
The Journal of Geology^ vol. 2. No. :!. April-May. 1894, contains: The 
oil shales of the Scottish Carboniferous system. H. M. Cadell; The Cre- 
taceous rim of the Black Hills, L. F. Ward: On Oiplbgraptidse, Lap- 
worth, Carl Wiman; Geological Surveys in Alabama. F. A. Smith: The 
superficial alteration of ore deposits. R. A. F. Penrose. Jr.; Studies for 
students: Erosion, transportation and sedimentation performed by the 
at mosphere, .1. A. Udden. 
American Naturalist, June, 1894, contains: A glacial ice dam and a 
limit to the ice-sheet in central Ohio. W. G. Tight. 
National Geographic Magazine, vol. 6, pp. 63-128, Ma} 23, 1894, con- 
tains: Geomorphologj of the southern Appalachians, C. W. Hayes and 
M. R. Campbell. 
TV. Excerptsand Individual Publications. 
The work and sco] f the Geological Survey. By C. R. Keyes. Iowa 
Geol. Survey, vol. III. Ann. Kept, for 1893, pp. 47-98, 1894. 
Sketch of the coal deposits of l<>wa. By C. R. Keyes. Mineral Re- 
sources of the United States for 1892, pp. 138-144, 1893. 
Natural gas and oil in Iowa. By C. R. Keyes. 
Cretacious formations of northwestern Iowa (abstract). 1>\ C. R. 
Keyes. Proc. Iowa Acad. Sci. for 1893, vol. I. pt. f. pp. "31. -J."). 
Derivation of the Unio fauna of the northwest. By C. R. Keyes. Proc. 
Iowa Acad. Sci. for 1893, vol. I. pi. I. pp. '.Mi 29. 
Vertebrata from the Neocomian of Kansas. By F. W. Cragin. Fifth 
Annual Publication of the Colorado College Scientific Society: 1 pages, 
1894. 
