No. 6.] AM. ASSOCIATION ADVANCEMENT SCIENCE. 381 



William Bross : The Topography and Geology of the Great Salt 



Lake valley. 



Charles Whittlesey : Pre-glacial channel of Eagle River, Lake 



Superior. 



J. F. WniTEAVES : Recent Discoveries of Fossil Fishes in the De- 

 Tonian Rocks of Canada ; Note on the occurrence of Siphonotreta 

 Scotica in the TTtica formation near Ottawa, Ont. 



T. Sterry Hunt : The Eozoic Rocks of Central and Southern Eu- 

 rope ; The Serpentines of Italy. 



John Rae : Arctic Explorations in North America. 



Wm. B. Dwight : Recent investigations and pahuontological dis- 

 coveries in the Wappinger limestone of Dutchess and neighboring 

 counties, New York. 



Samuel Lockwood : A Mastodon Americanus in a Beaver dam near 

 Freehold, N. J. 



Robert B. Warder : Silicified stumps of South Park, Col. 



J. W. Dawsox : Palaeozoic Floras of Eastern North America and 

 more especially of Canada. 



J. R. Bartlett : Deep-sea soundings and temperatures in the 

 Gulf Stream oft' the Atlantic Coast, taken under the direction of the 

 U. S. Coast Survey. 



Jos. W. Spexcer : Terraces and Beaches about Lake Ontario ; Oc- 

 currence of Graptolites in the Niagara Formation of Canada. 



Geo. H. Cook : On the Change of relative level of the ocean and 

 uplands on the Eastern coast of North America. 



M. L. Britton : On a Post-Tertiary Deposit containing impressions 

 of leaves in Cumberland County, N. J. 



W. 0. Crosby : On the classification and origin of Joint Structure. 



G. H. Perkixs : On the Winooski Marble of Vermont, with exhibi- 

 tion of specimens. 



Alexis A. Julien : The Comparative stratigraphy of the crystalline 

 rocks of North Carolina and Canada : The Genesis of the crystalline 

 iron ores of North Carolina and Northern Michigan ; The Dunyte 

 beds of North Carolina ; The Felsyte-tufa of Colorado. 



H. F. Walling : The origin of joint cracks. 



H. Carvil Lewis : The great terminal moraine across Pennsylvania. 



E. W. Clayi'ole : Note on the exterior markings of bark of Lepi- 

 dodendron Chemungense ; On Amphicadia Cedarvillensis from the 

 Niagara group of Cedarville, Ohio ; Note on the Fauna of the Catskill 

 Red Sandstone. 



Chas. a. Graham : A Rocking Stone in New York city. 



W. Hamilton Merritt : Occurrence of Magnetic ore deposits in 

 Victoria County, Ontario. 



Henry S. Williams : The Undulations of the rock-masses across 

 Central New York State. 



D. W. Kowalevsky : Freshwater lignitic series of the beds in the 

 Cretaceous formation of France. 



