str._, t. vii., p. 513.]

[Footnote 1323: _Observatory_, vol. xxiv., p. 167.]

[Footnote 1324: The attention of the author was kindly directed to this
point by Professor Young of Princeton (N. J.). _Cf._ Rebeur-Paschwitz,
_Sirius_, Bd. xvi., p. 233.]

[Footnote 1325: Oppenheim, _Astr. Nach._, No. 2,902.]

[Footnote 1326: _Astr. Nach._, No. 2,717.]

[Footnote 1327: Gruithuisen's _Analekten_, Heft 7, p. 48.]

[Footnote 1328: _Month. Not._, vols. xxv., xxvi., xxviii. _Cf._ Plummer,
_Observatory_, vol. xiii., p. 263.]

[Footnote 1329: _Nature_, vol. xxvii., p. 246.]

[Footnote 1330: _Astr. Nach._, No. 2,468.]

[Footnote 1331: _Athenaeum_, February 3, 1883.]

[Footnote 1332: _Astr. Nach._, Nos. 2,462, 2,466.]

[Footnote 1333: _Ibid._, No. 2,489.]

[Footnote 1334: _Annales_, Moscow, t. ix., pt. ii., p. 52.]

[Footnote 1335: _Comptes Rendus_, t. xcvii., p. 797.]

[Footnote 1336: _Astr. Nach._, No. 2,966.]

[Footnote 1337: _Copernicus_, vol. ii., p. 235.]

[Footnote 1338: _Comptes Rendus_, t. xcvi., p. 371.]

[Footnote 1339: _Astr. Nach._, No. 2,553.]

[Footnote 1340: _Ibid._]

[Footnote 1341: _Astr. Nach._, No. 2,568.]

[Footnote 1342: _Annales de l'Observatoire de Nice_, t. ii., c. 53.]

[Footnote 1343: Fenyi, _Astr. Nach._, No. 2,844; Kammermann, _Ibid._,
No. 2,849.]

[Footnote 1344: _Publ. Astr. Pac. Soc._, vol. i., p. 72.]

[Footnote 1345: _Annuaire_, Paris, 1891, p. 301.]

[Footnote 1346: _Astr. Nach._, No. 2,989.]

[Footnote 1347: _Comptes Rendus_, t. xxv., p. 564.]

[Footnote 1348: _Astr. Journ._, Nos. 205, 231.]

[Footnote 1349: _Ibid._, Nos. 228, 244, 380.]

[Footnote 1350: _Observatory_, vol. xviii., pp. 60, 163 (Denning and
Lynn).]

[Footnote 1351: _Astr. Nach._, No. 3,267; Plummer, _Knowledge_, vol.
xix., p. 156.]

[Footnote 1352: _Astr. Jour._, Nos. 333, 338.]

[Footnote 1353: _Astr. and Astroph._, vol. xi., p. 387.]

[Footnote 1354: _Knowledge_, vol. xv., p. 299.]

[Footnote 1355: _Harvard Annals_, vol. xxxii., pt. ii., p. 272.]

[Footnote 1356: _Ibid._, p. 287.]

[Footnote 1357: _Publ. Astr. Pac. Soc._, vol. vii., p. 161.]

[Footnote 1358: H. C. Wilson, _Astr. and Astroph._, vol. xii., p. 121.]

[Footnote 1359: _Observatory_, vol. xvi., p. 92.]

[Footnote 1360: Barnard, _Astr. and Astroph._, vol. xii., p. 180;
_Astroph. Jour._, vol. iii., p. 41.]

[Footnote 1361: Palisa, _Astr. Nach._, No. 3,147; Denning,
_Observatory_, vol. xvi., p. 142.]

[Footnote 1362: _Phil