that of
partial independence of them. Some of its fruits in the daily study of
prominences the next chapter will collect; and the harvest has been
rendered more abundant, as well as more valuable, since it has been
found possible to enlist, in this department too, the versatile aid of
the camera.

FOOTNOTES:

[Footnote 512: _Vierteljahrsschrift Astr. Ges._, Jahrg. xxvi., p. 274.]

[Footnote 513: _Astr. Jour._, vol. iv., p. 33.]

[Footnote 514: _Proc. Roy. Soc._, vol. xvii., p. 116.]

[Footnote 515: _Comptes Rendus_, t. lxvii., p. 757.]

[Footnote 516: _Comptes Rendus_, t. lxvii., p. 839.]

[Footnote 517: _Month. Not._, vol. xxvii., p. 88.]

[Footnote 518: _Proc. Roy. Soc._, vol. xvii., p. 123.]

[Footnote 519: _Washington Observations_, 1867, App. ii., Harkness's
Report, p. 60.]

[Footnote 520: _Am. Jour._, vol. xlviii. (2nd series), p. 377.]

[Footnote 521: _Am. Jour._, vol. xi. (3rd series), p. 429.]

[Footnote 522: Campbell, _Astroph. Jour._, vol. x., p. 186.]

[Footnote 523: Keeler, _Reports on Eclipse of January 1, 1889_, p. 47.]

[Footnote 524: Everything in such observations depends upon the proper
manipulation of the slit of the spectroscope.]

[Footnote 525: _Mem. R. A. S._, vol. xli., p. 435.]

[Footnote 526: _Comptes Rendus_, t. lxvii., p. 1019.]

[Footnote 527: _Mem. R. A. S._, vol. xli., p. 43.]

[Footnote 528: _Comptes Rendus_, t. xciv., p. 1640.]

[Footnote 529: Young, _Pop. Astr._, Oct., 1897, p. 333.]

[Footnote 530: J. Evershed, _Indian Eclipse_, 1898, p. 65; _Month.
Not._, vol. lviii., p. 298; _Proc. Roy. Soc._, Jan. 17, 1901.]

[Footnote 531: Frost, _Astroph. Jour._, vol. xii., p. 85; Lord, _Ibid._,
vol. xiii., p. 149.]

[Footnote 532: _Comptes Rendus_, t. cxvii., No. 1; _Jour. Brit. Astr.
Ass._, vol. iii., p. 532.]

[Footnote 533: Lockyer, _Phil. Trans._, vol. clvii., p. 551.]

[Footnote 534: The rosy envelope of prominence-matter was so named by
Lockyer in 1868 (_Phil. Trans._, vol. clix., p. 430).]

[Footnote 535: According to Trouvelot (_Wash. Obs._, 1876, App. iii., p.
80), the subtracted matter was, at least to some extent, accumulated in
the polar regions.]

[Footnote 536: _Bull. Phil. Soc. Washington_, vol. iii., p. 118.]

[Footnote 537: _Mem. R. A. S._, vol. xli., 1879.]

[Footnote 538: _Astr. Nach._, No. 1,737.]

[Footnote 539: _Correspondence with Newton_, pp. 181-184; Ranyard, _Mem.
Astr. Soc._, vol. xli., p. 501.]

[Footnote 540: S. P. Langley, _Was