[32] P.T. 204 A, p. 373.
[33] Ann. du Bureau Central Météorologique, année 1897, 1 Mem. p. B65.
[34] P.T. 161, p. 307.
[35] M.Z. 1895, 12, p. 321.
[35a] P.T. 1851, p. 123; and 1852, p. 103, see also (4) § 38.
[36] P.T. 159, p. 363.
[37] (1) p. 92.
[38] R.A.S. Notices 65, p. 666.
[39] R.A.S. Notices, 65, pp. 2 and 538.
[40] K. Akad. van Wetenschappen (Amsterdam, 1906) p. 266.