Development of Gravity Pendulums in the 19th Century / Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966

by Victor F. Lenzen; Robert P. Multhauf

[25] M. G. de Prony, “Méthode pour déterminer la longueur du pendule simple qui bat les secondes,” Collection de mémoires, vol. 4, pp. 65-76.

[26] Collection de mémoires, vol. 4, p. B-74.

[27] Phil. Trans. (1819), vol. 109, p. 337.

[28] John Herschel, “Notes for a History of the Use of Invariable Pendulums,” The Great Trigonometrical Survey of India (Calcutta, 1879), vol. 5.

[29] Capt. Edward Sabine, “An Account of Experiments to Determine the Figure of the Earth,” Phil. Trans. (1828), vol. 118, p. 76.

[30] John Goldingham, “Observations for Ascertaining the Length of the Pendulum at Madras in the East Indies,” Phil. Trans. (1822), vol. 112, p. 127.

[31] Basil Hall, “Letter to Captain Kater Communicating the Details of Experiments made by him and Mr. Henry Foster with an Invariable Pendulum,” Phil. Trans. (1823), vol. 113, p. 211.

[32] See Collection de mémoires, vol. 4, p. B-103.

[33] Ibid., p. B-88.

[34] Ibid., p. B-94.