[Footnote 129: Leonardo died in 1520, at the age of 78.] [Footnote 130: Paul III. in 1543.] [Footnote 131: _Hist. Ind. Sc._ b. v. c. ii.] [Footnote 132: Born 1537, died 1619.] [Footnote 133: _Hist. Ind. Sc._ b. xvii. c. ii. sect. 1.] [Footnote 134: Fabricius, _De Motu Locali_, p. 182.] [Footnote 135: p. 199.] [Footnote 136: _Speculationum Liber_, p. 195.] [Footnote 137: _Ibid._ p. 169.] [Footnote 138: Gulielmi Gilberti, _Colcestriensis, Medici Londinensis, De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure, Physiologia Nova, plurimis et Argumentis et Experimentis demonstrata_.] [Footnote 139: _Hist. Ind. Sc._ b. xii. c. i.] [Footnote 140: Pref.] [Footnote 141: _De Magnete_, lib. vi. c. 3, 4.] [Footnote 142: _Nov. Org._ b. i.] [Footnote 143: B. i. Aph. 64.] [Footnote 144: Vol. ix. 185.] [Footnote 145: _De Magnete_, p. 60.] [Footnote 146: B. iii. c. 4.] [Footnote 147: _Nov. Org._ b. ii. Aph. 48.] [Footnote 148: Drinkwater's _Life of Galileo_, p. 18.] [Footnote 149: _Life of Galileo_, p. 9.] [Footnote 150: _Hist. Ind. Sc._ b. vi. c. ii. sect. 5.] [Footnote 151: _Life of Galileo_, p. 29.] [Footnote 152: _Ibid._ p. 33.] [Footnote 153: _Il Saggiatore_, ii. 247.] [Footnote 154: _Il Saggiatore_, ii. 200.] [Footnote 155: _Ibid._ i. 501.] [Footnote 156: _Hist. Ind. Sc._ b. vi. c. ii. sect. 2.] [Footnote 157: _Hist. Ind. Sc._ b. vi. c. ii. sect. 4.] [Footnote 158: _Ibid._ b. v. c. iv. sect. 1.] [Footnote 159: _De Stell. Mart._ p. iv. c. 51 (1609); Drinkwater's _Kepler_, p. 33.] [Footnote 160: Published 1604. _Hist. Ind. Sc._ b. ix. c. ii.] [Footnote 161: _Hist. Ind. Sc._ b. v. c. iv. sect. 1.] [Footnote 162: _Hist. Ind. Sc._ b. vii. c. vi. sect 1.] [Footnote 163: _De Stell. Mart._ p. 11. c. 19.] [Footnote 164: _Hist. Ind. Sc._ b. ii. c. iv. sect. 6.] [Footnote 165: _Ibid._ sect. 8.] [Footnote 166: Montucla, i. 566.] [Footnote 167: _De Augm._ lib. iv. c. 1.] CHAPTER XV. FRANCIS BACON.