450 



Neue Literatur. 



431. — C. Lea: Notes on Silver. 444; — Notes on Silver Chlorides. 446. 



— C. R. Keyes : Reniarkable Fauna at the Base of the Burlington Linie- 

 stone in Northeastern Missouri. 447. — Türner : Glacial Pot-Pole in Cali- 

 fornia, 453 ; — Lavas of Mount Ingalls, Cal. 455. — P. E. Browning : 

 Method for the Quantitative Separation of Bariuni from Strontium by the 

 action of Amyl Alcohol on the Bromites. 459 ; — Note on the method for 

 the Quantitative Separation of Strontium from Calcium by the action of 

 Amyl Alcohol on the Nitrates. 462. — P. Headden : Study of the Forma- 

 tion of the Allays of Tin and Iron with Descriptions of some new Allays. 

 464. — D. Walcott : Notes on the Cambrian Rocks of Pennsylvania and 

 Maryland from the Susquehanna to the Potomac. 469. — H. Williams : 

 Volcanic Rocks of South Mountains in Pennsylvania and Maryland. 482. 



Jan. 1893. No. 265. — Cl. King: The Age of the Earth. 1. — 

 G. D. Harris: Tertiary Geology of Calvert Cliffs, Maiyland. 21. — 

 A. Genth : Anglesite associated with Boleite. 32. — S. Woodward : 

 Preliminary Account of the Iced Bar Base Apparatus of the U. S. Coast 

 and Geodetic Survey. 33. — J. C. Graham: Some Experiments with an 

 Artificial Geyser. 54. — H. A. Newton: Observation of the Andromed 

 Meteors of November 23 d and 27 d 1892. 61. — A. E. Foote: Preliminary 

 Notice of a Meteoric Stone seen fall at Bath, South Dacota. 64. — 0. C. 

 Marsh: New Cretaceous Bird allied to Hesperornis. 81; — Skull and 

 Brain of Claosaurus. 83. 



22) Bulletin of the Geolog ical Society of America. 8°. 

 Washington. [Jb. 1892. I. -492-.] 



Vol. 3. 1892. — Memorial Sketch of Alexander Winchell. 3. — 

 G. Steinmann : A Geological Map of South America (abstr.). 13. — A. Roth- 

 pletz: On the Permian, Triassic and Jurassic Formations in the East 

 Indian Archipelago. 14. — Harker: Thermometamorphism in igneous 

 Rocks. 16. — F. Ward: The Plant-bearing Deposits of the American 

 Trias. 23. — F. James : Studies in problematic Organisms — the Genus 

 Scolithus. 32. — F. Penrose: The Tertiary Iron Ores of Arcansas and 

 Texas. 44. — R. Hay : Sandstone Dikes in northwestern Nebraska, 50. — 

 F. Schmidt: The Eurypterus Beds of Oesel as compared with those of 

 North America (abstr.). 59. — A. Pawlow : On the marine Beds ciosing 

 the Jurassic and opening the Cretaceous with the history of their Fauna. 

 61. — G. de Geer: Quaternary Changes of Level in Scandinavia. 65. — 

 N. Krasnof: The „Black Earth" of the Steppes of southern Russia. 68. 



— G. Stefanescu: On the Existence of Dinotherium in Roumania. 81. — 

 F. Kemp : The Eleolite-Syenite of Beemerville, New Jersey (abstr.). 83. — 

 T. Hill: Notes on the Texas New-Mexican Region. 85. — Gregory: The 

 Relation of the American and European echinoid Faunas. 101. — Wins- 

 low: The Missouri Coal Measures and the Conditions of their Deposition. 

 107. — Safford: The Pelvis of a Megalonyx and other Bones from Big 

 Bone Cave, Tennessee. 121. — Hilgard : The Cienegas of Southern Cali- 

 fornia. 124. — Johnson : The Chattahoochee Embayment. 128. — G. Jates : 



