THE 
hoeRNAL OF GEOLOGY 
JOILVEAAUGD GD SL 1805. 
MOthE TON Th “GLACIAL DEPOSITS OF SOULHWESiI- 
JIN AUBIN IGE. 
In the Geology and Resources of the Forty-ninth Parallel (1875), 
the writer first gave some account of the superficial deposits 
and glacial phenomena of that part of the Great Plains now 
included in the district of Alberta. This was followed, in the 
Report of the Geological Survey of Canada for 1882-84, by a some- 
what more complete presentation of the facts relating to the same 
region. Since that time considerable areas of the adjacent 
plains have been examined by Messrs. McConnell and Tyrrell, 
much further information has been obtained respecting the Cor- 
dilleran region and many very important advances have been 
made in the study of the glacial period in North America gener- 
ally. It thus appeared to be desirable that some further exami- 
nation should be made, by way of revision and addition, in this 
region in which the Great Plains border upon the Rocky Moun- 
tains, and with this object, the writer, accompanied by Mr. R. G. 
McConnell, spent some time there in June 1894. 
The main points which seemed to require attention were those 
connected with the relation of the eastern and western drift along 
the slopes of the mountains, the western limit of the former and 
the nature of this limit. It appeared probable that facts of 
value might, in particular, be obtained in the Porcupine Hills, 
which rise to heights exceeding 5000 feet, at a distance of from 
Vo1. III., No. 5. 507 
; i 
