492 



Neue Literatur. 



32) Transactions of t he American Institute of Mining- En- 

 gine er s. New York C. 8°. [Jb. 1890. I. -451-. 1 ] 



Vol. XIX. 1891. — T. Sterry Hunt: The Iron-Ores of the United 

 States. 3. — R. Henry Norton : Notes on Coal-Mining in Oregon. 23. — 

 T. D. Ledyard : Some Ontario Magnetites. 28. — H. M. Chance : The Re- 

 sources of the Black Hills and Big Horn Country, Wyoming. 49. — Geo. 

 W. Gtoetz : Analyses of Lake Superior Iron-Ores. 59. — A. F. Wendt : 

 The Potosi, Bolivia, Silver District. 74. — F. P. Dewey : The Department 

 of Metallurgy and Economic Geology in the U. S. National Museum. 232. 



— Erskine Eamsay: The Pratt Mines of the Tennessee Coal, Iron and 

 Railroad Company, Alabama, 296. — C. E. Hesse : The Paint-Ore Mines 

 at Lehigh Gap. 321. — J. B. Farish: Interesting Vein-Phenomena in 

 Boulder County, Colorado. 547. — Ellis Clark: Notes on the Progres* 

 of Mining in China. 571. — A. Thies and A. Mezger: The Geology of 

 the Haile Mine, South Carolina. 595. — A. Thies and Wm. B. Phillips : 

 The Thies Process of Treatning Low-Grade Auriferous Sulphides at the 

 Haile Gold Mine, Lancaster County, South Carolina. 601. — J. Douglas: 

 The Copper Resources of the United States. 678. — E. G. Pechin:' The 

 Iron-Ores of Virginia and their Developement. 1016. 



33) Bulletinof the Geolog ical Society of America; 8°. 

 Washington. 



Vol. I. 1890. — J. J. Stevenson: Organization of the geological 

 Society of America. 1. — J. Hall: Some Suggestions regarding the sub- 

 division and grouping of the Species usually included under the generic 

 Term Orthis, in accordance with external and internal Characters and 

 microscopic Shell- Structure (abstract). 19 ; — On new Genera and Species 

 of the Family Dichyospongidae (abstract). 22. — K. Gilbert : The Strength 

 of the Earth's Crust (abstract). 23. — T. C. Chamberlain : Bowlder Belts 

 distinguished from Bowlder Trains, their Origin and Significance (abstract). 

 27. — ,1. F. Kemp: On the Trap Dikes near Kennebunkport , Maine (ab- 

 stract). 31. — P. Neff : The Sylvania Sand in Cuyahoga County. 32. — 

 J. D. Dana: Areas of Continental Progress in North America and the 

 Influence of the Conditions of these Areas on the Work carried forward 

 within them. 36. — Ch. D. Walcott : Study of a Line of Displacement 

 in the Great Canon of the Colorado in Northern Arizona. 49. — J. W. 

 Spencer: The High Continental Elevation preceding the Pleistocene. 65; 



— Ancient Shores, Bowlder Pavements, and High-Level Gravel Deposits 

 in the Region of the Great Lakes. 71. — E. Orton: Origin of the Rock 

 Pressure of Natural Gas in the Trenton Limestone of Ohio and Indiana. 

 87. — J. C. Russell: Notes on the Surface Geology of Alaska. 99. — 

 A. C. Lawson: Note on the Pre-Paleozoic Surface of the Archean 

 Terranes of Canada. 163; — The Internal Relations and Taxonomy of 

 the Archean of Central Canada. 174. — W. M. Davis: Structure and 



1 Das Inhaltsverzeichniss dies. Jahrb. I. -451- bezieht sich auf Vol. 

 XVIII, nicht auf Vol. XVII. 



