1 
Proceedings. 
- The Theories of Ore Deposits. 
- Notes on the Lithology of the Island of Jura, Scotland. 
- (With Dickerman, S. E.) An Olivine Bearing Diabase 
from St. George, Maine. 
-^ The South Trap Range of the Keweenawan Series. 
—— (With J. D. Whitney.) The Azoic System and its Pro¬ 
posed Subdivisions. 
-Preliminary Description of the Peridotytes, Gabbros,, 
Diabases and Andesytes of Minnesota. 
-Syenite and Gabbro in Massachusetts. 
-The Argillite and Conglomerate of the Boston Basin. 
-A Description and Classification of the Rocks of the Cor¬ 
dilleras. 
-—- On the Classification of Rocks. 
-On the Relation of the “Keweenawan Series” to the East¬ 
ern Sandstone in the Vicinity of Torch Lake, Mich. 
-The Dona Inez and the Llano del Inca Meteorites, from 
Atacama, Chili, with Mineralogical Description. 
-On a Supposed Fossil from the Copper-bearing Rocks of 
Lake Superior. 
-Methods of Instruction in Mineralogy. 
-Some Instances of Atmospheric Action on Sandstone. 
-The Fortieth Parallel Rocks. 
-On the Trachyte of Marblehead Neck, Massachusetts. 
-On the Relation of the Quincy Granite to the Primordial 
Argillite of Braintree, Massachusetts. 
Wahnschaffe, F. Bemerkungen zu dem Funde eines Geschiebes 
mit Pentamerus borealis bei Havelberg. 
-Die Bedeutung des Baltischen Hohenruckens fur die Eis- 
zeit. 
-(with Lossen, K. A.) Beitrage zur Beurtheilung der 
Frage nach einer einstigen Vergletcherung des Brocken- 
Gebietes. 
-Die Susswasser-Fauna und Susswasser-Diatomeen-Flora 
im Unteren Diluvium der Umgegend von Rathenow. 
•-Mittheilungen uber das Alluvium der Rathenower Gegend. 
-Ueber zwei conchylienfuhrende Lossablagerungen nordlich 
vom Harz. 
