Pleistocene of the Winnipeg Basin. — Tyrrell. 21 
ing southward, while on the eastern side of the lake, near Steep 
Rock point, their direction is S. S^-IS*^ E. The granite islands in 
lake St. Martin are well striated in a direction S. 33° E. These 
observations all show that the glacier moved southward iu the 
great Winnipeg valle}-, the direction of movement being clearly 
proved b}' the characters of many of the exposed and striated rock- 
surfaces. 
On the east side of lake Winnipeg, the general direction of 
glaciation has already' been recorded by Dr. Bell as trending more 
or less <;lirectly out into the lake. Some instances of the occur- 
rence of two sets of striae have however lately been observed that 
would appear to indicate an earlier glacial movement more nearly 
parallel to the shore, though the earlier stride have been almost 
entirely obliterated l^y the later. 
On Swampy island the general direction of striation is S. 52° 
W. , while another set of strias was found to occur under a mass 
of pebbles and boulders bearing S. 13° E. Mr. Pan ton has already- 
recorded striae running in a similar direction on Black Bear island 
forty miles further south. ^ 
In lake Winnipegosis, where man}' striae have been observed, 
the islands and points of till and boulders lie in the direction of 
glaciation, and applying the same rule to the palaeozoic area of 
lake Winnepeg, where much of the countr}' has not yet been ex- 
amined, the direction of glacier motion is seen to swing southward 
from the east shore, till at the mouth of the St. Martin (Little 
Saskatchewan) and Fisher rivers it would appear to have been 
about due south. 
South of the lacustral area in Manitoba, strijB have been re- 
corded by Messrs. Panton- and Upham from Stonewall, Stonj- 
mountain and Little Stony mountain bearing S. 20°-25° E., ^ 
and on the Assiniboine river in Sec. 23, Tp. 9, R. 10, stritB were 
lately observed by the writer on the surface of Niobrara marlite 
bearing S. 38° E. Farther south, within the United States, striae 
made by a continuation of the same great glacier have been re- 
corded bj' Pres. T. C. Chamberlin down to the northern boundar}' 
1 Notes on the Geology of some islands in lake Winnipeg by J. 
Hoyles Panton, M. A., Hist, and Sci. Sec. Man. Trans. :.'0. 1886, p. 6. 
2 Gleanings from Outcrops of Silurian Strata in the Redrlver valley 
by J. Hoyles Panton, M. A., Man. Hist, and Sci. Soc. Trans. 1.5, 1884, 
p. 7. 
3 Report of Exploration of the Glacial lake Agassiz in Manitoba by 
Warren Upham. Can. Geol. Surv. Ann. Rep. Vol. IV, part E. p. 11.5. 
