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has been proposed as a signal
Fog sometimes accompanies on a westerly wind
The sailors make a distinction between fog and vapour The latter is that which occurs in the coldest weather usually with the wind from NW
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[[page number in pencil]] 41
produced when the water is warmer than the air It sometimes continues several days worse in some respects than a fog for if cast away in it the sailor is frozen to death.
Richies compass used and much approved for steam boats
The gun is sometimes heard 4 miles and again 3/4 of a mile