go The American Naturalist. [January, 
upon the morphological characters of form, size, etc., gave characters 
which are of specific value in plants, though they may not be’so in ani- 
mals.—J. F. J.] 
Geological Society of America.—Second annual meeting, 
Washington, D. C., Dec. 29, 30, and 31, 1890.—The following papers 
were read: On the Geology of Quebec and its Environs; Henry M. 
Ami. Antiquities from under Tuolumne Table Mountain, California; 
On the Early Cretaceous of California and Oregon ; The Structure of a 
Portion of the Sierra Nevada of California; George F. Becker. The 
Nickel and Copper Deposits of Sudbury District, Canada; Robert Bell. 
The Chazy Formation in the Champlain Valley ; Ezra Brainerd. Re- 
marks on a Fallen Forest and Peat Layer Underlying Aqueous Deposits 
at Naaman’s Creek, Del. ; Hilborne T. Cresson. Mineral and Chemical 
Composition of Certain Igneous Rocks from the Mesozoic Area in Cul- 
pepper County, Virginia; H. D. Campbell and W. G. Brown. A Pro- 
posed System of Chronologic Cartography on a Physiographic Basis; 
T. C. Chamberlin. An Account of the Geology of the Washington 
Region ; On a Jointed Earth-Auger for Geological Exploration in Soft 
Deposits ; Nelson H. Darton. The Geological Date of the Origin of 
Certain Topographic Forms on the Atlantic Slope of the Eastern United 
States; W. M. Davis. Two Fossil-Bearing Belts in the Triassic Foris 
tion of Connecticut; W. M. Davis and S. W. Loper. Illustrations 
of the Structure of Glacial Sand-Plains; W. M. Davis and H. L. Rich. oe 
Note on the Geological Structure of the Selkirk Range, in the Vicinity 
of the Line of the Canadian Pacific Railway; George M. Dawson. - 
Note on the Carboniferous Flora of Newfoundland; Sir William 3 
Dawson. The Triassic Sandstones in Massachusetts; B. K. Emerson. ae 
Glacial Grooves South of the Terminal Moraine ; F. Max Foshay and ne : 
Richard R.Hice. The Overthrust Faults of the Southern Appala Sn 
Beds of the Texas-Arkansas Region, Coastward of the Present Paleozoic 
W. L; E..V. D'Invilliers. The Structure of the Blue Ridge Næ 
graphical Microscopes; A. C. Lane. Notes on Variations i ie 
Tertiary and Cretaceous Strata of Alabama; Daniel W. Lang ae 
On Tertiary and Post-Tertiary Changes in Physical Geography ees 
