Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 509
tug-boats around. Movingabout the hold, the divers are in constant peril,owing to the liability of the air-pipe to be caughtin the many obstructions, and they are morecautious now than before. When they reach thewounded part, they brace the hull surrounding itwith iron stanchions, and their next… … VESSELS ON THE DRV DOCKS. have been made to improve upon them, but with-out success, as in the instance of the gutta-perchapontoons, which were tested a few years ago. Thisinvention was so curious that a brief descriptionmay interest you. The pontoons looked like bal-loons, and were attached by…
Children's literature
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