234 J, W. Dawson on the Drift. 
sult of the immense accumulation of ice supposed would be 
‘to prevent motion ene ad by the want of slope or the coun: 
teraction of opposing slopes, or to induce a slight and irregular 
2s alla the margins or outward from the more proml- 
oe It is to be observed, also, that, as Hopkins has shown, it 
