[178] Newt. Princ. philos. Lib. III. pag. 391, 392.
[179] Book III. Ch. 4.
[180] Newt. Princ. philos. Lib. III. pag. 391.
[181] Ibid. pag. 392.
[182] See Book I. Ch. 2. § 60, 64.
[183] Book I. Ch. 2. § 17.
[184] See Ch. II. § 6.
[185] The second of the laws of motion laid down in Book I. Ch. 1.
[186] Newton. Princ. philos. Lib. III. prop. 6. pag. 401.
[187] Newton’s Princ. philos. Lib. III. prop. 22, 23.