[Footnote 1066: _Astr. Nach._, No. 3,432.]

[Footnote 1067: _Astr. Jour._, Nos. 275, 325, 367, 472; _Observatory_,
vol. xv., p. 425.]

[Footnote 1068: Tisserand, _Comptes Rendus_, October 8, 1894; Cohn,
_Astr. Nach._, No. 3,404.]

[Footnote 1069: _Bull. Ac. R. Bruxelles_, t. xlviii., p. 607.]

[Footnote 1070: _Astr. Nach._, No. 2,294.]

[Footnote 1071: _Ibid._, No. 2,284.]

[Footnote 1072: Denning, _Month. Not._, vol. xliv., pp. 64, 66;
_Nature_, vol. xxv., p. 226.]

[Footnote 1073: _Sidereal Mess._, December, 1886, p. 289.]

[Footnote 1074: _Astr. Nach._, Nos. 2,280, 2,282.]

[Footnote 1075: _Month. Not._, vol. xlvi., p. 117.]

[Footnote 1076: _Proc. Roy. Soc. N. S. Wales_, vol. xiv., p. 68.]

[Footnote 1077: _Phil. Trans._, vol. i., p. 143.]

[Footnote 1078: For indications relative to the early history of the red
spot, see Holden, _Publ. Astr. Pac. Soc._, vol. ii., p. 77; Noble,
_Month. Not._, vol. xlvii., p. 515; A. S. Williams, _Observatory_, vol.
xiii., p. 338.]

[Footnote 1079: _Astr. and Astrophysics_, vol. xi., p. 192.]

[Footnote 1080: _Month. Not._, vol. l., p. 520.]

[Footnote 1081: _Observatory_, vol. xiii., pp. 297, 326.]

[Footnote 1082: _Trans. R. Dublin Soc._, vol. iv., p. 271, 1889.]

[Footnote 1083: _Publ. Astr. Pac. Soc._, vol. ii., p. 289.]

[Footnote 1084: _Astr. and Astrophysics_, vol. xi., p. 686.]

[Footnote 1085: Denning, _Knowledge_, vol. xxiii., p. 200;
_Observatory_, vol. xxiv., p. 312; _Pop. Astr._, vol. ix., p. 448;
_Nature_, vol. lv., p. 89.]

[Footnote 1086: Williams, _Observatory_, vol. xxiii., p. 282.]

[Footnote 1087: _Month. Not._, vol. lvi., p. 143.]

[Footnote 1088: Belopolsky, _Astr. Nach._, No. 3,326.]

[Footnote 1089: _Publ. Astr. Pac. Soc._, vol. iv., p. 176.]

[Footnote 1090: _Bull. Astr._, 1900, p. 70.]

[Footnote 1091: _Month. Not._, vol. xxxi., p. 34.]

[Footnote 1092: _Beobachtungen_, Heft ii., p. 99.]

[Footnote 1093: _Ber. Saechs. Ges. der Wiss._, 1871, p. 553.]

[Footnote 1094: _Month. Not._, vol. lix., p. 76.]

[Footnote 1095: _Beziehungen der Sonnenfleckenperiode_, p. 175.]

[Footnote 1096: A. Hall, _Astr. Nach._, No. 2,269.]

[Footnote 1097: _Astr. Jour._ (Gould's), vol. ii., p. 17.]

[Footnote 1098: _Ibid._, p. 5.]

[Footnote 1099: _On the Stability of the Motion of Saturn's Rings_, p.
67.]

[Footnote 1100: _Mem. de l'Ac._, 1715, p. 47; Montucla, _Hist. des
Math._, t. iv., p. 19; _An Original Theory of the Universe_, p. 115.]