Footnote 835: _Jour. des Scavans_, December, 1667, p. 122.]
[Footnote 836: _Elemens d'Astr._, p. 525. Cf. Chandler, _Pop. Astr._,
February, 1897, p. 393.]
[Footnote 837: _Beobachtungen ueber die sehr betraechtlichen Gebirge und
Rotation der Venus_, 1792, p. 35. Schroeter's final result in 1811 was
23h. 21m. 7.977s. _Monat. Corr._, Bd. xxv., p. 367.]
[Footnote 838: _Astr. Nach._, No. 404.]
[Footnote 839: _Rendiconti del R. Istituto Lombardo_, t. xxiii., serie
ii.]
[Footnote 840: _Astr. Nach._, No. 3,304.]
[Footnote 841: _Bothkamp Beobachtungen_, Heft ii., p. 120.]
[Footnote 842: _Comptes Rendus_, t. cxi., p. 542; t. cxxii., p. 395.]
[Footnote 843: _Month. Not._, vol. lvii., p. 402; _Astr. Nach._, No.
3,406.]
[Footnote 844: _Mem. Spettroscopisti Italiani_, t. xxv., p. 93;
_Nature_, vol. liii., p. 306.]
[Footnote 845: _Astr. Nach._, No. 3,329.]
[Footnote 846: _Ibid._]
[Footnote 847: _Bull. de l'Acad. de Belgique_, t. xxi., p. 452, 1891.]
[Footnote 848: _Observations sur les Planetes Venus et Mercure_, 1892.]
[Footnote 849: _Astr. Nach._, No. 3,300.]
[Footnote 850: _Ibid._, No. 3,332.]
[Footnote 851: _Ibid._, No. 3,314.]
[Footnote 852: _Ibid._, No. 3,170.]
[Footnote 853: _Ibid._, No. 3,641. The velocity of a point on the
equator of Venus, if Brenner's period of 23h. 57m. were exact, would be
0.28 miles per second; but the displacements due to this rate would be
doubled by reflection.]
[Footnote 854: _Novae Observationes_, p. 92.]
[Footnote 855: _Mem. de l'Ac._, 1700, p. 296.]
[Footnote 856: _Phil. Trans._, vol. lxxxiii., p. 201.]
[Footnote 857: Webb, _Cel. Objects_, p. 58.]
[Footnote 858: _Month. Not._, vol. xlii., p. 111.]
[Footnote 859: _Bull. Ac. de Bruxelles_, t. xliii., p. 22.]
[Footnote 860: _Phil. Trans._, vol. lxxxii., p. 309;
_Aphroditographische Fragmente_, p. 85 (1796).]
[Footnote 861: _Astr. Nach._, No. 679.]
[Footnote 862: _Month. Not._, vol. xiv., p. 169.]
[Footnote 863: _Ibid._, vol. xxiv., p. 25.]
[Footnote 864: _Am. Jour. of Sc._, vol. xliii., p. 129 (2d ser.); vol.
ix., p. 47 (3d ser.).]
[Footnote 865: _Astroph. Jour._, vol. ix., p. 284.]
[Footnote 866: _Month. Not._, vol. xxxvi., p. 347.]
[Footnote 867: _Old and New Astronomy_, p. 448.]
[Footnote 868: _Hist. Phys. Astr._, p. 431.]
[Footnote 869: _Mem. Roy. Astr. Soc._, vol. xlvii., pp. 77, 84.]
[Footnote 870: _Astr. Reg._, vol. xiii., p. 132.]
[Footnote 871: _L'Astronomie_,
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