488 General Notes. [July, 
present sea-level up to 5270 feet, at which height a well-marked 
beach of rolled stones occurs on It-ga-chuz mountain 
- 7. Moraines occur in great numbers. Some of the moraine- 
like accumulations may have been formed in connection with 
the north-to-south glaciation. Most of those now seen, however, 
mark stages in the retreat of glaciers towards the various moun- 
tain ranges. The material of the moraines resembles that of the 
Boulder-clay, but with water-rounded stones even more abundant. 
-~ S. The sequence of events in the interior region has been: 
glaciation from north to south, with deposit of Boulder- clay, for- 
mations of terraces by lowering of water-surface, accompanied 
or followed by a warm period; short advance of glaciers from 
the mountains contemporaneously with the formation of lower 
. terraces; retreat of glaciers to their present limits. Glaciation of 
Vancouver island may have occurred during both the first and 
second cold periods, or during the second only. 
g. If the north to south glaciation has been produced by gla- 
cier ice, it must have been either (a) by the action of a great 
northern ice-cap (against which grave difficulties appear), or (4) 
by the accumulation of ice on the country itself, especially on the 
mountains to the north. In either case it is probable that the 
glacier filled the central plateau and, besides passing southward, 
passed seaward through the gaps and fjords of the coast range. 
The Boulder- clay must have been formed along the front of the 
glacier during its withdrawal, in water, either that of the sea, Or 
of a great lake produced by the blocking by local glaciers of the 
whole oe the valleys leading from the plateau, to a depth of over 
fee 
10. ie general submergence to over 5000 feet be admitted, the 
Japan current would, flow strongly through Behring’s Strait, and 
over part of Alaska, while Arctic ice-laden water, passing south 
across the region of the Great Plains, would also enter the central 
plateau of British Columbia, accounting for the north to south 
glaciation and simultaneous formation of the Boulder- clay. 
THE SPECIES OF RHINOCEROS OF THE Loup Fork ErocH.— 
Prof. Cope recently exhibited to the American Philosophical 
Society the crania of three species of rhinoceros which he had 
obtained from the Loup as beds of Kansas and Colorado. 
Two of them which were new to science, he named <A/phelops 
fossiger and A. nedkaiarhaein Of the third species, the A. megal- 
odus (Cope), two crania were exhibited, one of them in a remark- 
able state of preservation. Three crania of the A. fossiger and 
one of the A. malacorhinus furnished their distinctive characters. 
The A. megalodus is the smallest species, and about as large as 
the smaller race of the Rhinocerus sondaicus according to Cuvier. 
It has a narrow elevated occiput, long and smooth nasal bones, 
a contracted preorbital region, and one large infraorbital foramen. 
The A. malacorhinus is a very peculiar species. It has very short 
