tnote 156: _Annuaire_, 1846, p. 409.]

[Footnote 157: _Ibid._, p. 317.]

[Footnote 158: _Ibid._, p. 322.]

[Footnote 159: _Phil. Trans._, vol. xl., p. 192.]

[Footnote 160: _Mem. R. A. S._, vol. x., p. 17.]

[Footnote 161: _Ann. du Bureau des Long._, 1846, p. 309.]

[Footnote 162: _De Facie in Orbe Lunae_, xix., 10. Cf. Grant, _Astr.
Nach._, No. 1838. As to the phenomenon mentioned by Philostratus in his
_Life of Apollonius_ (viii. 23), see W. T. Lynn, _Observatory_, vol.
ix., p. 128.]

[Footnote 163: Schmidt, _Astr. Nach._, No. 1832.]

[Footnote 164: _Astronomiae Pars Optica, Op. omnia_, t. ii., p. 317.]

[Footnote 165: _De Stella Nova, Op._, t. ii., pp. 696, 697.]

[Footnote 166: _Astr. Pars Op._, p. 320.]

[Footnote 167: _Mem. de l'Ac. des Sciences_, 1706, p. 119.]

[Footnote 168: A digit = 1/12 of the solar diameter.]

[Footnote 169: _Phil. Trans._, vol. xxix., pp. 247-249.]

[Footnote 170: _Mem. de l'Ac. des Sciences_, 1715; _Histoire_, p. 49;
_Memoires_, pp. 93-98.]

[Footnote 171: _Ibid._, 1724, p. 178.]

[Footnote 172: _Mem. de l'Ac. des Sciences_, 1715, pp. 161, 166-169.]

[Footnote 173: _Ed. Ency._, art. _Astronomy_, p. 635.]

[Footnote 174: _Trans. Am. Phil. Soc._, vol. vi., p. 274.]

[Footnote 175: _Memoir of Caroline Herschel_, p. 327.]

[Footnote 176: _Phil. Trans._, vol. xxv., p. 2240.]

[Footnote 177: _Ibid._, vol. xl., p. 182.]

[Footnote 178: _Ibid._, vol. xlv., p. 586.]

[Footnote 179: _Mem. R. A. S._, vol. i., pp. 145, 148.]

[Footnote 180: _American Journal of Science_, vol. xlii., p. 396.]

[Footnote 181: _Phil. Trans._, vol. xxxviii., p. 134. Father Secchi,
however, adverted to a distinct mention of a prominence observed in 1239
A.D. A description of a total eclipse of that date includes the remark,
"Et quoddam foramen erat ignitum in circulo solis ex parte inferiore"
(Muratori, _Rer. It. Scriptores_, t. xiv., col. 1097). The "circulus
solis" of course signifies the corona.]

[Footnote 182: _Phil. Trans._, vol. lxix., p. 114.]

[Footnote 183: _Trans. Am. Phil. Soc._, vol. vi., 1809, p. 267.]

[Footnote 184: _Annuaire_, 1846, p. 460.]

[Footnote 185: _Ibid._, p. 439, _note_.]

[Footnote 186: _Ibid._, p. 416.]

[Footnote 187: _Mem. R. A. S._, vol. xxi., p. 82.]

[Footnote 188: _Ibid._, p. 90.]

[Footnote 189: _Ibid._, pp. 7, 8.]

[Footnote 190: _Le Soleil_, t. i., p. 386.]

[Footnote 191: By Williams and Stanistreet, _Mem. R. A. S._, vol. xxi.,
pp. 54, 56.