[288] Philos. Transact. N. 88, p. 5099.
[289] Opt B. I. par. 2. exp. 14.
[290] Ibid. exp. 10.
[291] Opt. pag. 122.
[292] Opt. B. I. part 2. exp. 11.
[293] Ibid prop. 4, 6.
[294] Opt. pag. 51.
[295] Opt. Book II. prop. 8.
[296] Opt. Book II. par. 3. prop. 2.
[297] § 17.