... a start and then plodded on steadily till midnight over a soft and uncomfortable surface. Shortly after that hour I looked at the sledge-meter and found that it had ceased working; the sprocket had been knocked off. Repair was out of the question, as every joint was soldered up; so without more ado we dropped it. In future we were to estimate our speed, having already had some good experience in ... — The Home of the Blizzard • Douglas Mawson
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