...as the thickness of the ice at the pole. But suppose the slope of the upper surface of the cap to be only one-half this amount, viz., a half degree, —...somewhat extravagant ; but a slight consideration will show that it would be even more extravagant to assume that a slope, of less than half a degree would...

...as the thickness of the ice at the pole. But suppose the slope of the upper surface of the cap to be only one-half this amount, viz., a half degree —...twelve miles as the thickness of the cap at the pole." As there are in the southern ocean icebergs above a mile in thickness, the great antarctic ice-cap...

...as the thickness of the ice at the pole. But suppose the slope of the upper surface of the cap to be only one-half this amount, viz., a half degree —...twelve miles as the thickness of the cap at the pole." As there are in the southern ocean icebergs above a mile in thickness, the great antarctic ice-cap...

...as the thickness of the ice at the pole. But suppose the slope of the upper surface of the cap to be only one-half this amount, viz., a half degree, —...and we have no evidence that a slope so small would bo sufficient to discharge the ice, — still we have twelve miles as the thickness of the cap at the...

...supposing we assume that one-half or even one-quarter that amount of slope would suffice, still we have 6 miles as the thickness of the cap at the Pole. To...accustomed to reflect on the physical conditions of this problem, this estimate may doubtless be regarded as somewhat extravagant ; but a slight consideration...

...the slope of the upper surface of the cap to be only one-half this amount, viz., a half degree,—and we have no evidence that a slope so small would be sufficient to discharge the ice,—still we have twelve miles as the thickness of the cap at the pole. To those who have not been...