Parsons, William Barclay, 1859-1932 · New York, Columbia University Press · leaf 42
Dreb-beFs boat, but credits Bourne with having first proposedthe principles that Drebbel used, and recalled thatBourne had suggested the possibility of getting freshair through tubes reaching to the surface. Mercennescontribution to the art was his stated belief that thecompass would be equally… … SUB-SURFACE NAVIGATION 19 was not expected to submerge completely. It is inter-esting as the first application of a mechanical motiveforce other than oars and the first suggestion of a paddlewheel. It, therefore, marked a great step forward inmatters of design. A translation of de Sons…
Fulton, Robert, 1765-1815 · Submarines (Ships)
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