[90] Quoted by Kepler, as above, at p. 315.

[91] Commentarius in Sacroboscum, cap. iv.; quoted in Kepler’s Astronomiæ Pars Optica, c. viii. sec. 3; Opera Omnia, vol ii. p. 316. Ed. Frisch, 1859.

[92] Phil. Trans., vol. xl. p. 193; 1737.

[93] De Stellâ Novâ in Pede Serpentarii, p. 115; Pragæ, 1606.

[94] Phil. Trans., vol. xl. p. 193; 1737.

[95] V. Wing, Astronomia Britannica, p. 355.

[96] Historia Cœlestis, vol. i. pp. 7 and 21.

[97] Diary of Samuel Pepys, vol. vi. p. 208; Ed. M. Bright, 1879.

[98] Phil. Trans., vol. xxv. p. 2240; 1706.

[99] Being half a Saros period (see p. 20, ante).