[Footnote 84: _Astronomical Journal_, Nos. 213, 501.]
[Footnote 85: _Astr. Nach._, Nos. 2,999, 3,000.]
[Footnote 86: _Veröffentlichungen der Grossh. Sternwarte zu Karlsruhe_, Bd. iv., 1892.]
[Footnote 87: _Proceedings Amsterdam Acad. of Sciences_, Jan. 27, 1900.]
[Footnote 90: _Phil. Trans._, vol. xcvi., p. 230.]
[Footnote 91: _Mém. Prés. à l'Ac. de St. Pétersbourg_, t. iii., p. 603 (read Feb. 5, 1837).]
[Footnote 92: _Die Centralsonne, Astr. Nach._, Nos. 566-567, 1846.]
[Footnote 93: Sir J. Herschel, note to _Treatise on Astronomy_, and _Phil. Trans._, vol. cxxiii., part ii., p. 502.]
[Footnote 94: The position is (as Sir J. Herschel pointed out, _Outlines of Astronomy_, p. 631, 10th ed.) placed beyond the range of reasonable probability by its remoteness (fully 26°) from the galactic plane.]
[Footnote 95: Mädler in _Westermann's Jahrbuch_, 1867, p. 615.]
[Footnote 96: Letter from Bessel to Sir J. Herschel, _Month. Not._, vol. vi., p. 139.]
[Footnote 97: Wolf, _Gesch. d. Astr._, p. 743, _note_.]
[Footnote 98: _Astr. Nach._, Nos. 745-748.]
[Footnote 100: Adopting Elkin's revised parallax for Procyon of 0·325".]
[Footnote 101: _Astr. Nach._, Nos. 1371-1373.]
[Footnote 102: _Ueber die Doppelsterne_, Bericht, 1827, p. 22.]
[Footnote 103: _Ueber die Doppelsterne_, Bericht, 1827, p. 25.]
[Footnote 104: _Mensuræ Micr._, p. xcix.]
[Footnote 105: _Stellarum Fixarum imprimis Duplicium et Multiplicum Positiones Mediæ_, pp. cxc., cciii.]
[Footnote 106: For instance, the southern stars, 36A Ophiuchi (itself double) and 30 Scorpii, which are 12' 10" apart. _Ibid._, p. cciii.]
[Footnote 107: _Stellarum Fixarum_, etc., p. ccliii.]
[Footnote 108: _Études d'Astronomie Stellaire_, 1847, p. 82.]
[Footnote 110: See Encke's criticism in _Astr. Nach._, No. 622.]
[Footnote 111: _Phil. Trans._, vol. cxiv., part iii., 1824.]
[Footnote 113: _R. A. S. Mem._, vol. v., p. 178, 1833.]
[Footnote 114: _Astr. and Astrophysics_, vol. xii., p. 581.]
[Footnote 115: _Popular Astr._, vol. i., p. 243.]
[Footnote 116: _Phil. Trans._, vol. cxxiii., and _Results_, etc., Introd.]
[Footnote 117: _Results of Astronomical Observations made during the years 1834-8 at the Cape of Good Hope._]
[Footnote 119: See Proctor's _Universe of Stars_, p. 92.]