Note f — BOOK VII.
Reading edition
Pectorales Musculi Hominis flectentes humeros, parvi & parum carnosi sunt; non æquant 50am aut 70am partem omnium Musculorum Hominis. E contra in Avibus, Pectorales Musculi vastissimi sunt, & aquant, imò excedunt, & magìs pendent, quàm reliqui omnes Musculi ejusdem Avis simul sumpti. Borell. de Mot. Animal. Vol. I. Prop. 184.
Mr. Willughby having made the like Observation, hath this Reflection on it, whence, if it be possible for Man to fly, it is thought by them who have curiously weighed and considered the matter, that he would attempt such a Thing with Hopes of Success, must so contrive and adapt his Wings, that he may make use of his Legs, and not his Arms in managing them: (because the Muscles of the Legs are stronger, as he observes.) Willugh. Ornith. L. 1. c. 1. §. 19.