Encloses letter on and discusses extent of government aid for proposed Hammerfest magnetic observatory and various alternatives with regard to it.
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Encloses letter on and discusses extent of government aid for proposed Hammerfest magnetic observatory and various alternatives with regard to it.
Wants JH to include [J. C.] Ross's instructions in his forthcoming report. Encloses tract on station errors. Discusses [Elias] Loomis's findings regarding errors in measurement.
Corrects information from an earlier letter. [John] Caldecott stated that diurnal curve of declination changed with monsoon at Trivandum. Discusses [William] Allen and observation with transportable magnetometer.
Discusses the reductions and publication of magnetic observations from various stations. Describes report of the Antarctic expedition and the determination of the magnetic pole. Endorses proposal for Canadian Survey. Discusses survey of South Africa and British Guiana.