Wyville Thomson—General Ocean Circulation. 355 
hurling floe-bergs by a hurricane from another direction. It 
seems, however, that in certain seasons there is more open 
water in the direction of Grinnell’s Land and Smith’s Sound 
some progress might be made in this way if it were conceivable 
that the end to be gained was worth the expenditure of so 
much labor and treasure. 
The Antarctic Regions.—But little progress has been made 
during the last quarter of a century in the actual investigation 
of the conditions of that vast region which lies within the par- 
allel of 70°S. Some additional knowledge has been acquired, 
and the light which recent inquiries have thrown upon the 
general plan of ocean circulation and the physical properties 
of ice, have given a new direction to what must partake for 
some time to come of the nature of speculation. 
_ From information derived from all sources mp to the present 
time, it may be gathered that the unpenetrated area of about 
700 uare miles surrounding the South Pole is by no 
