Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 121
rotated or tilted to a very slightextent, the increase and diminution of surface being securedby the opening and closing of the membranous expansion orweb between the toes. In this latter respect they bear a cer-tain analogy to the feet of the seal, the toes of which, as hasbeen explained, spread… … Fig, 48.—Swan, in the act of swimming, the right foot being fully expanded,and about to give the effective stroke, which is delivered outwards, down-wards, and backwards, as represented at r of fig. 50; the left foot being closed,and about to make the return stroke, which is delivered in an inward,…
Animal locomotion · Aeronautics
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The stones of Venice : [With appendices, additional notes, and "Venetian index."] (1894)](https://img.insideoutlibrary.com/img/200/ia-stonesofvenicewi02rusk-246-47.webp)
