A Popular History of Astronomy During the Nineteenth Century / Fourth Edition

by Agnes M. Clerke

[1154] Trans. Roy. Soc. of Edinburgh, vol. xxi., p. 66.

[1155] Newcomb, Pop. Astr., p. 521 (2nd ed.).

[1156] M. Williams, Nature, vol. iii., p. 26.

[1157] Comp. Brit. Almanac, p. 94.

[1158] Radau, Bull. Astr., t. ii., p. 316.

[1159] Newcomb, Pop. Astr., pp. 521-525.

[1160] Proc. Roy. Soc., vol. xxxiii., p. 393.

[1161] To this hostile argument, as urged by Mr. E. Douglas Archibald, Sir W. Siemens opposed the increase of rotative velocity through contraction (Nature, vol. xxv., p. 505). But contraction cannot restore lost momentum.

[1162] Stellar Evolution, and its Relations to Geological Time, 1889.

[1163] Comptes Rendus, t. lii., p. 481. See also Kirkwood, Observatory, vol. iii., p. 409.