Report on pendulum observations made in 1833 at Stockholm Observatory by Jöns Svanberg, translated by John Herschel An account of pendulum observations made by Jöns Svanberg and S.A, Cronstrand on behalf of the Swedish Royal Academy of Sciences. An attached note reads: 'Svanberg's Account. Although not belonging to the "History" as such, I conceive it better deposited with those sheets than retained by me. J.H. Mar. 3 /86'. Jöns Svanberg (1771–1851) was a Swedish clergyman and natural scientist. 3 March 1886