[98] Prop. 3; 8, 9; 13, 14.
[99] Prop. 4.
[100] Prælect. Geometr. pag. 123.
[101] Newton. Princ. Lib. II. prop. 10.
[102] Newton. Princ. Lib II. prop 10. in schol.
[103] Torricelli de motu gravium.
[104] Ch. 2 § 85, &c.
[105] Newt. Princ L. II. sect 6.
[106] L. II. sect. 4.
[107] See B. II. Ch 6. § 7. of this treatise.