Note f — BOOK I.
Reading edition
That there is no such Thing as positive Levity, but that Levity is only a less Gravity, is abundantly manifested by the acute Seig. Alph. Borelli de Mot. à Grav. pend. cap. 4. See also the Annotations of the learned and ingenious Dr. Clark on Rohaulti Phys. p. 1. c. 16. Note 3. Also the Exper. of the Acad. del Cimento, p. 118, &c. Dr. Wallis’s Disc. of Gravity and Gravitation before the Royal Society, Nov. 12. 1674. p. 28, &c.