Report of the commissioner of patents, for the year 1849 (1850)
United States. Patent Office, Ewbank, Thomas, 1792-1870, Lincoln, Abraham, 1809-1865. Improved method of lifting vessels over shoals, United States. Congress (31st, 1st session : 1849-1850). House · Washington [D.C.] : Office of Printers to House of Reps. · leaf 621
a tridental posterior margin, and a generaloutline akin to that of the jiea-bass, figured also on the page referred to, ex-hibiting moreover, a striking likeness to the paddles of swimming and divingbirds. In sea-leopards, sea-bears, lions and kindred animals, each foot be-comes lobed, furnishing… … Porpoise and Seal. As the movements of seals consist more in diving than in long lateral journies, the blade is transverse. So it is with whales, which have it lobated.Breathing air, they cannot remain long under the surface without suffocation,hence it is essential that they should have the power…
United States. Patent Office · Patents · Inventions · Aids to navigation
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
