Page:Scott's Last Expedition, Volume 2.djvu/51

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1911]
ABSENCE OF TIDE CRACK
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ourselves with them in that direction, we found we were still running into the same crevassed mounds and ridges, so, finding a hollow with deeper snow in it, we camped for the night, and decided to wait until we could see exactly where we had got to.

The absence of a well-marked tide crack—which had rather puzzled us in the Discovery days—in the crossing of land-ice slopes such as Terror Point (Cape McKay) and the 'second snowcape,' both of which come straight down from Terror and run into the pressure ridges, was a question which we had in our minds all these days. We assuredly did cross several small cracks on these slopes which had the appearance of a certain amount of working, but their breadth was a matter of a couple of inches only, and if tidal they must take up only an insignificant fraction of the movement. They are so small that they may easily have been obscured by snowfall in the old days. Bowers is convinced they are to be considered tidal cracks. I am not so sure myself, and hope to have a better view of them by daylight before deciding whether there is anything to take up tidal movement besides the pressure ridges, which seem to me more than sufficient.

This day the temp. ranged from −36·7° up to −27°, with light airs northerly and southerly.

Some hours after midnight it began to blow and to snow more heavily.

The min. temp. for the night was −24·5° up to noon the next day.

Monday, July 10, 1911.—By noon a blizzard was blowing from the S.S.W., of force 6 to 8, and the air was