Thanks for declination readings from photograms at Kew. Thinks meteorological observatory on Vesuvius is good idea, but not sure a magnetic one is. Includes two charts of world.
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Thanks for declination readings from photograms at Kew. Thinks meteorological observatory on Vesuvius is good idea, but not sure a magnetic one is. Includes two charts of world.
Summary of research on terrestrial magnetism in other countries. Will send paper on magnetic storms to JH.
Sends sample sheets of magnetic reductions from continual observations photographed at Kew. Explains reduction formulas. Will send to JH new paper by ES on lunar diurnal variation. Carlo Matteucci reports interest by new government in Naples in reviving meteorological observatory there.
Asks JH to comment on ES's paper, which will be read to R.S.L. on 10 Jan. Corrects errors in two earlier letters to JH. Will adopt 'Photograms' instead of 'Photographs.'