On Sept. 5, 1793, there happened an eclipse which, annular to the N. of Scotland, was seen and observed in England by Sir W. Herschel[107] as a partial eclipse. He made some important observations on the Moon on this occasion measuring the height of several of the lunar mountains. Considerations respecting the shape of one of the Moon’s horns led him to form an opinion adverse to the idea that there the Moon had an atmosphere. FOOTNOTES: [Footnote 79: _Historiarum Sui Temporis_, Lib. iv., cap. 9.] [Footnote 80: _Historia Novella_, Lib. i., sec. 8.] [Footnote 81: _Norman Conquest_, vol. v. p. 239.] [Footnote 82: _Historia Novella_, Lib. ii., sec. 35.] [Footnote 83: Letter in the _Times_, July 28, 1871.] [Footnote 84: Rogerus de Wendover, _Flores Historiarum_, vol. ii. p. 535, Bohn’s ed.] [Footnote 85: _Sugli Eclissi Solari Totali del 3 Giugno 1239, e del 6 Ottobre 1241_ in the _Memorie del R. Istituto Lombardo di Scienze e Littere_, vol. xiii. p. 275.] [Footnote 86: _Historia Cœlestis_, vol. i. p. 38.] [Footnote 87: _Hist. Engl._, vol. iii. chap. xviii. p. 50, 4to. ed.] [Footnote 88: _Phil. Trans._, vol. xl. p. 194, 1737.] [Footnote 89: _Astronomiæ Pars Optica_, c. viii. sec. 3; _Opera Omnia_, vol. ii. p. 315. Ed. Frisch, 1859.] [Footnote 90: Quoted by Kepler, as above, at p. 315.] [Footnote 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.] [Footnote 92: _Phil. Trans._, vol. xl. p. 193; 1737.] [Footnote 93: _De Stellâ Novâ in Pede Serpentarii_, p. 115; Pragæ, 1606.] [Footnote 94: _Phil. Trans._, vol. xl. p. 193; 1737.] [Footnote 95: V. Wing, _Astronomia Britannica_, p. 355.] [Footnote 96: _Historia Cœlestis_, vol. i. pp. 7 and 21.] [Footnote 97: _Diary of Samuel Pepys_, vol. vi. p. 208; Ed. M. Bright, 1879.] [Footnote 98: _Phil. Trans._, vol. xxv. p. 2240; 1706.] [Footnote 99: Being half a _Saros_ period (see p. 20, _ante_).] [Footnote 100: _Itinerarium Curiosum_, 2nd ed., vol. i. p. 180.] [Footnote 101: _Mem. de Mathématique et de Physique de l’Acad. des Sciences_, 1724, p. 259.] [Footnote 102: _Phil. Trans._, vol. xl. pp. 181, 184. 1737.] [Footnote 103: _Phil. Trans._, vol. xlv. p. 586. 1750. This is the man who under the designation of “Lord Aberdour” observed the eclipse of 1737 (_ante_).] [Footnote 104: Rev. W. Stukeley, Rector of St. George’s, Queen’s Square, London, _Diary_, vol. xx. p. 44, ed. “Surtees Soc.,” vol. lxxvi. p. 384.] [Footnote 105: Le Gentil, _Voyage dans les Mers de l’Inde_, vol. ii. p. 16. Paris, 1769.] [Footnote 106: _Phil. Trans._, vol. lxix. p. 105. 1779.] [Footnote 107: _Phil. Trans._, vol. lxxxiv. p. 39. 1794.] CHAPTER XIII.