Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York, D. Appleton & company · leaf 162
senting its maximum of surface, toresume its position of rest and plane of least resistance. Theprincipal effort required in flight is, therefore, made duringextension, and at the beginning of the down stroke. Theelastic ligaments are variously formed, and the amount ofcontraction which they… … Fig. 62,—Left wing of the albatross, d, e, / Anterior or thick margin of pinion.by a, c Posterior or thin margin, composed of the primary (b), secondary (a),and tertiary (c) feathers. In this wing the first primary is the longest, theprimary coverts and subcoverts being unusually long and strong.…
Animal locomotion · Aeronautics
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Albumasar, De magnis [con]iunctionibus, anno[rum] reuolutio[n]ibus, ac eo[rum] profectionibus octo [con]tines tractatus (1515)](https://img.insideoutlibrary.com/img/200/ia-albumasardemagni00abum-138-201.webp)
