From:
Edward Sabine
To:
Sir John Herschel
Date:
[9 June 1864]
Source of text:
TxU:H/M-0528; Reel 1093
Summary:
Encloses description of Col. [J. T.?] Walker's experiments. Asks for JH's opinion of these.
Contributor:
John Herschel Project
Showing 1–5 of 5 items
Encloses description of Col. [J. T.?] Walker's experiments. Asks for JH's opinion of these.
Pendulum experiments to be conducted at stations of Great Indian Trigonometrical Survey.
Plans to confer with [J. T.] Walker and F. A. T. Winnecke from Pulkovo to learn of Russian pendulum experiments before reporting to R.S.L. council. J. H. Pratt's measurement of polar axis and theory about earth's center of gravity.
Had hoped to attend ES's soiree, but has influenza. Praises ES's report on Mr. McClintock's magnetic observations at Port Barrow.
Gives reasons for and discusses technicalities of supporting pendulum experiments at astronomical and geodesical stations in Indian trigonometrical survey.