Introduction
Conditions of the Problem
Villemot, 1707
Bernouilli, 1734
Lesage, 1750
Euler, 1760
Herapath, 1816
Guyot, 1832
Faraday, 1844
Seguin, 1848
Boucheporn, 1849
Lamé, 1852
Waterston, 1858
Challis, 1859
Glennie, 1861
Keller, 1863
Tait, 1864
Saigey, 1866
Croll, 1867
Leray, 1869
Boisbaudran, 1869
Guthrie, 1870
Crookes, 1873
General Conclusions
