80 TLDE YOWKNALET OLR AGOLO GN 
margin. Under such circumstances, if it be assumed that the 
temperature was low enough to freeze the sea water to consider- 
able depths, the shore-ice might have done all that shore-ice can 
ever do in the way of developing strie. But even with so vio- 
lent an assumption, the direction of the striae would be likely to 
betray their origin. Striz formed in this way would be more or 
less nearly perpendicular to the line of the shore on which they 
were formed. On the slopes of isolated elevations, as they passed 
through the insular stage during emergence, the strie formed by 
shore-ice should run up and down the slopes on all sides. The same 
would be true on the slopes of mountain ranges. The strie 
would thus be developed ina sort of system, a system determined 
by the method and position of their formation. The waves, 
striking the shores at different angles might seriously interfere 
with the regularity of the development of the system. The strie 
associated with the drift are arranged systematically, but the 
principle underlying their arrangement is radically different from 
that here stated. Taken as a whole, they do not stand in any 
definite relationship to any existent body of water, or to any body 
of water which can be conceived to have existed in the past. 
While therefore shore-ice may be conceived to produce striz 
simulating those beneath the drift, and while certain violent 
assumptions, 1f admitted, might enable us to conceive of a wide- 
spread development of these striz, it is still true that such ice 
could never have produced any considerable part of the striae 
accompanying our drift. Even if this were not true, the drift 
possesses numerous characteristics which would make its refer- 
ence to shore-ice impossible, and it fails to possess numerous 
other characteristics which would certainly belong to it had any 
phase of shore-ice been the principal agent of its production. 
For example, if shore-ice were the agent of the drift, the great 
body of it should be stratified, since it was deposited mainly in 
water. However effectively the action of shore and floating ice 
might have destroyed the superficial stratification along successive 
shore lines, it could not have destroyed it to any considerable 
depth. Again, the constitution of the drift, and the distance and 
