This section is from the book "The Scientific American Boy", by A. Russell Bond. Also available from Amazon: The Scientific American Boy.

Fig. 205. The "A" Tent.
In connection with the sleeping bags it may be well to describe here a curious shelter Dutchy and I came across in one of our tramps. It was just about dusk one day when we discovered a temporary camp at which a couple of men were preparing dinner. They informed us that they were naturalists on a two weeks' outing. At their invitation we joined camp with them. They had a small "A" tent of balloon silk, under which they kept their provisions. The tent had no ridge pole, but was supported instead by a rope stretched between two trees (see Fig. 205).
 
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