716 REVIEWS 
JOURNAL, in reviewing some other recent papers on the Canadian pre- 
Cambrian, is scarcely correct. ‘The statement is as follows : 
“The succession and correlation proposed in the above papers by 
Adams and Barlow and by Ells are fundamentally different from the 
traditional one which has been held in Canada for many years. The 
first departure is in placing the Grenville and Hastings series as 
equivalent to the Huronian.” 
In the papers in question this correlation was not definitely made, 
but it was stated in reference to the Hastings series that ‘both 
lithologically and stratigraphically the rocks bear a striking resemblance 
to rocks mapped as Huronian in the region to the north and north- 
east of Lake Huron, and it seems very likely that the identity of the 
two series may eventually be established. The two areas, however, 
are rather widely separated geographically, and the greatest care will 
have to be exercised in attempting such a correlation.’’* 
The further statement made by the reviewer that ‘‘ Ells places with 
the Huronian all the sedimentary rocks of Eastern Canada” is also 
manifestly inaccurate, seeing that while it might terminate the con- 
troversy concerning the upward extension of the Huronian to include 
in that system the whole Palaeozoic succession, Ells cercainly did not 
advocate this course. 
The Palaeozoic outliers in this area and especially that of Niagara 
age are of exceptional interest. Geographically this outlying patch of 
Niagara is so widely separated from any other locality where rocks of 
this age are now known to exist, that it has been a question as to whether 
it was formerly connected with the occurrences about Hudson Bay or 
with those about Lake Ontario. The strata are highly fossiliferous 
and the palaeontological evidence presented seems to prove that the 
seas in which the Niagara sediments of the Winnipeg basin and of 
Hudson Bay were deposited were practically continuous, while both 
were separated from the Temiscaming basin and the region to the 
southwest. 
The Pleistocene history of the region seems to consist of a period 
of glaciation by a great ice-sheet, followed by a profound submergence, 
during which time the ocean invaded a large portion of the Ottawa 
valley forming a marine gulf rivaling in extent the similar invasions 
of the sea in Palaeozoic times. The direction of motion of the ice 
varies from S 7° W to S 18° W. 
t American Journal of Science, Vol. III, March 1897, p. 177. 
