Deep Well at Deloraine. — Tyrrell. 335 
an ancient lake, but the extent of the kxke has not ^-et been clearly 
defined. 
No. 3. — This is undoubtedly a hard blue-grey unstratified till 
with pebbles and boulders. Similar till has been thrown out of 
the railway tank well at the Deloraine station, which was dug to a 
depth of a hundred feet, passing through the Pleistocene deposits 
into the underlying Cretaceous shales. 
No. 4. — This bed would appear to be a coarser-grained till, but 
whether it differs in age from the till overlying it is uncertain. At 
the bottom of this layer a moderately strong flow of water was 
obtained, rising to within twenty-five feet of the top of the well. It 
is more or less impregnated with sulphate of soda. 
No. 5. — A light bluish-gre}', modei'ateh^ hard, non-calcareous 
clay shale, typical of the Odanah series. Excellent specimens of 
this shale were obtained from the railwaj' tank well, a few hundred 
3'ards to the west. This series has alread}- been described by the 
writer,* and was previously very well described by Dr. Gr. M. 
Dawson,! as the upper portion of his Pembina Mountain gi'oup, 
from exposures in the A^alley of the Pembina river, etc. During 
the summer of 1890 the same formation was traced in the valley of 
the Assiniboine river, from the mouth of Arrow river to the vicin- 
ity of Oak lake, on the Canadian Pacific railwa}", and near the 
latter place was found to contain a few fragmentary fish remains, 
with the shell of an Ostreaf, and impressions of portions of the 
prismatic shell of Inoceramus. Prof. Culvert also states that 
similar shale outcrops as far south as La Moure, near the south 
line of North Dakota, and that in it he succeeded in finding a few 
fossils, the best an Inoceramus, and casts of a little Baculite. 
These observations clearly prove an extensive areal development 
for this series of brittle light grey clay shales, and also that it 
belongs to the marine Cretaceous of the Western Plains. As was 
stated in the introduction, it is overlain bj' the coarse Laramie? 
sandstones of the base of the Turtle mountains. 
No. 6. — A considerable flow of water was obtained from this 
*''The Cretaceous of Manitoba," by J.B. Tyrrell, Am. Jour. Sci., 3d 
series, vol. xl, p. 227, Sept., 1890. 
f'GeoIogy and Resources of the 49th Parallel,'" by G. M. Dawson, Mon- 
treal, 1878, pp. 81-8.5. 
XA report on the preliminary investigation to determine the proper 
location of artesian wells, etc. U. S. Senate Document, No. 222, Wash- 
ington, 1890, p. .59. 
