Co7ite7its. V 
E. W. Claypole, 192. — An Example of Wave-formed Cusp at Lake 
George, N. Y., Frank Mason Comstock, 192. 
Personal and Scientific Ncivs, 194. 
APRIL NUMBER. 
Edward Orton. I.C.White. [Portrait.] 197 
Classification of Igneous Rocks According to Composi- 
tion. J. E. Spuur 210 
« 
Identification of an Ohio Coal Measures Horizon in New 
Mexico. C. L. Herkick and T. A. Bendkat 234 
Editorial Coinment. — ^Bibliographia Geologica, 243. — The Geology of 
New Hatnpshire, C. H. Hitchcocx, 2i4. — Traquair on Silurian 
Fish, 2U. 
Review of Recent Geological Literature. — Die Silurischen Craniaden 
der Ostseelander mit ausschluss Gotland.^, V. Friedkich Baron 
HoYNiNGEN-HuENE, 249. — Nogra Anteckningar om Vestergotland 
Oftersiiuriska Graptolitskiffrar, Sv. Leonh Toknquist, 249. — A 
Preliminary Report on a Part of the Clays of Georgia, George E. 
Ladd, Assistant Geologist, 219. — Paysiograohy of the Chattanooga 
District in Tennessee, Georgia and Alabama, Charles Willard 
Hayes, 250. — A Preliminary Report on the Artesian Well System 
of Georgia, S. W. McCallie. Assistant Geologist, 251. — Devon- 
ische Fischreste aus der Eifel, Frederick v. Huene, 251. — The 
Great Lakes and Niagara, Ralph S. Tarr, 251. — Geological Hist- 
ory of the Nashua Valley during the Tertiary and Quaternary 
Periods, W. O. Crosby, 252. 
Monthly Authors^ Catalogue of American Geological Literature, 252. 
Correspondence. — Mr. Walcott's view of the Etcheminian, 255. 
Personal and Scientific News, 258. 
MAY NUMBER. 
Descriptions of new Species of Fossils from the Devonian 
and Subcarboniferous Rocks of Missouri. R. R. 
Rowley. [Plate V.] 261 
Glacial and modified Drift in Minneapolis, Minnesota. 
Warren Upham. [Plates VI and VII.] 273 
On the origin of Phenocrysts, and the development of the 
Porphyritic Texture in Igneous Rocks. W, O. Crosby 299 
Editorial Cumment. — A White-hot Liquid Earth and Geological Time, 
310. — Nepheline Melilite Basalt from Oahu, Hawaiian Islands, 
312. — Recognition of River and Flood Deposits, 313. 
Review of Recent Geological Literature. — Geologia de los aldredores 
de Orizaba, con un perfil de iavertiente oriental de la mesa central. 
