Encyclopaedia Britannica, 11th Edition, "McKinley, William" to "Magnetism, Terrestrial" / Volume 17, Slice 3

by Various

[61] T.M. 3, p. 1, &c.

[62] P.T. 181 A, p. 53 and 188 A.

[63] Ann. du Bureau Central Mét. vol. i. for years 1884 and 1887 to 1895.

[64] Ann. dell’ Uff. Centrale Met. e Geod. vol. 14, pt. i. p. 57.

[65] A Magnetic Survey of the Netherlands for the Epoch 1st Jan. 1891 (Rotterdam, 1895).

[66] Kg. Svenska Vet. Akad. Handlingar, 1895, vol. 27, no. 7.

[67] Denkschriften der math. naturwiss. Classe der k. Akad. des Wiss. (Wien), vols. 62 and 67.

[68] Journal of the College of Science, Tōkyō, 1904, vol. 14.

[69] Ann. de l’observatoire ... de Toulouse, 1907, vol. 7.

[70] Ann. du Bureau Central Mét. 1897, I. p. B36.