206 The American Naturalist. [February, 
chusetts; N. H. Shaler. The Laramie Group; J. S. Newberry, New 
York. On Glacial Phenomena in Canada; Robert Bell, Ottawa, 
Canada. Orographic Movements in the Rocky Mountains; S. F. 
Emmons, Washington, D. C. Note on the Serpentine of Syracuse ; 
Geo. H. Williams, Baltimore, Md. Remarks on the Surface Geology 
of Alaska; I. C. Russell, Washington, D. C. Origin of the Rock 
Pressure of Natural Gas in the Trenton Limestone of Ohio and 
Indiana; Edward Orton, Columbus, Ohio. On the Tertiary Deposits 
of the Cape Fear River Region; William B, Clark, Baltimore, Md. 
Note on the Pre-Palzozoic Surface of the Archean Terranes of 
Canada; Andrew C. Lawson, Ottawa, Canada. 
December 27th.—The Structure and Origin of Glacial Sand Plains ; 
William M. Davis, Cambridge, Mass. Glacial Features of Parts of the 
Yukon and Mackenzie Basins; R. G. McConnell, Ottawa, Canada. 
Post-Tertiary Deposits of Manitoba and the Adjoining Territories of 
C a; J. B. Tyrrell, Ottawa, Canada. A Moraine of Retrocession 
in Ontario; G. Frederick Wright, Oberlin, Ohio. The Southern Ex- 
tension of the Appomatox Formation; W. J. McGee, Washington, 
D.C. he Value of the Hudson River Group” in Geologic 
Nomenclature; Charles D. Walcott, Washington, D. C. The Cal- 
ciferous Formation in the Champlain Valley; Ezra Brainerd 
and H. M. Seely, Middlebury, Vt. The Fort Cassin Rocks and 
their Fauna; R. P. Whitfield, New York. The Stratigraphy of 
the Quebec Group; R. W. Ells, Ottawa, Canada. Geological and 
Petrographical Observations in Southern and Western Norway ; Geo. 
H. Williams, Baltimore, Md. Cretaceous Plants from Martha’s Vine- 
yard; C. D. White, Washington, D. C. The Sandstone Dikes of the 
Forks of Cottonwood Creek, in Tehama and Shasta Counties, Cali- 
fornia ; J. S. Diller, Washmgton, D. C. On the Relation between the 
Mineral Composition and the Geological Occurrence of the Igneous 
Rocks at Electric Peak and Sepulchre Mt., Yellowstone National Park ; 
Jos. P. Iddings, Washington, D.C. On Certain Peculiar Structural 
Features in the Foothill Region of the Rocky Mountains near Denver, 
Colorado ; Geo, H, Eldridge, Washington, D. C. Illustrations of the 
Glaciers in the Selkirk Mts. and Alaska ; A. S. Bickmore, New York. 
December 28th.—Some Results of Archean Studies; Alexander 
Winchell, Ann Arbor, Mich. Significance of granitoid oval areas in 
the Laurentian ; C. H. Hitchcock, Hanover, N. H. Porphyritic 
Granite ; B. K. Emerson, Amherst, Mass. The internal relations and 
taxonomy of the Archean of Central Canada; Andrew C. Lawson, 
