1890.] Proceedings of Scientific Societies. 209 
present surface throughout large districts; but it is covered in many 
places by stratifieds ands, silts, and gravels deposited in the beds of lar- 
ger or smaller fresh-water lakes. The paper describes the character of 
the till, the direction in which the glacier forming it has moved from 
the Archean nucleus, and some of the ‘moraines, drumlins, kames, 
etc., that it has left in its course ; also it states evidences of the recur- 
rence of glacial conditions, and the positions of a number of lakes in 
which the subsequent deposits were laid down. . 
A TERMINAL MORAINE IN ONTARIO. G. Frederick Wright, Oberlin, 
Ohio.—In the Report of Progress upon the Geological Survey of 
Canada, published in 1863, pp. 908, 909, the Artemisia gravel is de- 
scribed as a belt of loose gravel extending from Owen Sound to Brant- 
ford, and thence in an easterly and northeasterly direction, passing 
about half way between Lake Ontario and Lake Simcoe, following the 
highest ground of the peninsula, and being in general about 950 feet 
above the sea. Lakes with no visible inlet are described as occurring 
near the greatest elevation. The object of the paper is to give the re- 
sults of personal investigations during the past summer along this line, 
demonstrating its morainic character. Many facts which some have 
attributed to a northern depression at the close of the glacial period 
receive simple and sufficient explanation from the morainic character 
of this deposit. 
THE SOUTHERN EXTENSION OF THE APPOMATTOX FORMATION. W., 
J. McGee, Washington, D.C.—The Appomattox formation was applied 
in 1888 to a widespread deposit of orange-colored sands and clays, 
with occasional intercalations of gravel, developed on and between the 
Rappahanock, James, Roanoke, and Appomattox rivers in eastern Vir- 
ginia, and widening and thickening southward. Recently the same 
formation has been traced through the Carolinas, Georgia, Alabama, 
and Mississippi; and has been found to constitute the prevailing sur- 
face deposit in these States. It isa marine or brackish water deposit, 
yielding no fossils save fragmentary cones and bits of lignite. A con- 
siderable part of the Orange Sand of Dr. Hilgard belongs to the for- 
mation. It lies unconformably upon the Grand Gulf (Miocene?) 
strata of Alabama and Mississippi as upon the fossiliferous Miocene of 
eastern Virginia and North Carolina, and it is overlain unconformably 
by Plistocene deposits in various localities. Although its age has not 
been determined palzontologically, it forms, by means of its vast ex- 
tent and uniform character, a great datum formation from which the 
stratigraphy of the Coastal plain may be reckoned. 
