Part 30 (1/2)

[Footnote 725: Young, _The Sun_, p. 310.]

[Footnote 726: _Op._, t. vi., p. 198.]

[Footnote 727: _Rosa Ursina_, lib. iv., p. 618.]

[Footnote 728: _Mec. Cel._, liv. x., p. 323.]

[Footnote 729: _Le Soleil_ (1st ed.), p. 136.]

[Footnote 730: _Monatsber._, Berlin, 1877, p. 104.]

[Footnote 731: _Astr. Nach._, Nos. 3,105-6; _Astr. and Astrophysics_, vol. xi., p. 720.]

[Footnote 732: _Proc. Roy. Irish Acad._, vol. ii., No. 2, 1892.]

[Footnote 733: _Am. Jour. of Sc._, vol. xxi., p. 187.]

[Footnote 734: _Amer. Jour. of Science_, vol. v., p. 245, 1898.]

[Footnote 735: For J. W. Draper's partial antic.i.p.ation of this result, see _Ibid_. vol. iv., 1872, p. 174.]

[Footnote 736: _Phil. Mag._, vol. xiv., p. 179, 1883.]

[Footnote 737: ”The Solar and the Lunar Spectrum,” _Memoirs National Acad. of Science_, vol. x.x.xii.; ”On hitherto Unrecognised Wave-lengths,”

_Amer. Jour. of Science_, vol. x.x.xii., August, 1886.]

[Footnote 738: _Astroph. Jour._, vol. i., p. 162.]

[Footnote 739: _Annals of the Smithsonian Astroph. Observatory_, vol.

i.; _Comptes Rendus_, t. cx.x.xi., p. 734; _Astroph. Jour._, vol. iii., p.

63.]

[Footnote 740: _Phil. Mag._, July, 1901.]

[Footnote 741: _Comptes Rendus_, t. xcii., p. 701.]

[Footnote 742: _Nature_, vol. xxvi., p. 589.]

[Footnote 743: _Phil. Trans._, vol. cx.x.xii., p. 273.]

[Footnote 744: _Ann. de Chim._, t. x., p. 321.]

[Footnote 745: _Ibid._, t. xi., p. 505.]

[Footnote 746: _Comptes Rendus_, t. cxii., p. 1200.]

[Footnote 747: _Wied. Ann._, Bd. x.x.xix., p. 294; Scheiner, _Temperatur der Sonne_, pp. 36, 38.]

CHAPTER VI