Discusses shipping some of JH's books, with a shipment of other books for the Royal Society, to the R.S.L. in order to save shipping charges.
Showing 61–80 of 90 items
Discusses shipping some of JH's books, with a shipment of other books for the Royal Society, to the R.S.L. in order to save shipping charges.
Glad JH received gelatine paper. Discusses magnetic experiments at Toronto and Hobarton. Discusses R.S.L. committees and preparation of instruments for Arctic expedition.
Hypothesizes that annual variation of Dip and Total Force at Toronto may be caused by greater proximity of earth and sun. Discusses annual variations.
Wants advice regarding recalculation of magnetic lines using [C. F.] Gauss's method and new numerical data. This will be a provisional calculation.
Saw [J. B.] Listing, who may see JH soon. Sends volume of Cape magnetic observations. Thermometer at Kew is a great success. New thermometers compare favorably with [Henri] Regnault's.
Read JH's Admiralty Manual meteorology article. Disagrees with statement regarding barometer and pressure of dry atmosphere. Discusses atmosphere and barometer at some length.
Discusses regulations of bequest, which will benefit chemistry and physics. Discusses relationship between solar spot period and magnetic disturbances. Wants JH's comments on paper regarding this topic.
Believes similarity of period of solar spots and that of terrestrial magnetic variation is more than coincidental.
Discusses magnetic observations from Toronto and Hobarton from the 1840s. Attempting to determine when range of variation was greatest.
Glad JH is recovering and free from official duties [at the Mint]. Discusses his upcoming papers regarding magnetism.
Discusses [H. W.] Dove's works regarding rotating storms. New information from Russian observatories gives a more complete understanding of the phenomenon. Has not seen Keith Johnson's new edition of Physical Atlas.
Glad to know which of ES's papers JH has. Sends another along with maps from [Keith] Johnson's Physical Atlas. Discusses JH's ideas regarding relationship between solar spots and magnetic disturbances.
Mentions [P.] Plantamour's memoir on barometer and a criticism by Mr. Dilams[?]. Comprehending why variations of magnetic disturbances correspond in period with terrestrial year is difficult.
Asks JH to read ES's publications for the R.S.L. proceedings concerning colonial magnetic observations. Wishes JH could see R.S.L.'s recent accomplishments in magnetism.
Glad JH is reviewing advancement of science by R.S.L. members. Disappointed that little was accomplished in certain areas where more was expected.
Discusses ellipticity and results of [G. B.] Airy and [F. W.] Bessel. Also, [Alexander von] Humboldt's magnetic results.
Wife not well enough to visit Collingwood. ES may come next week. University of Kasan Observatory may assist British endeavors. Mr. Bolyani is very capable.
Would be glad to accompany JH to Kew to see instruments.
Will travel to Kew Tuesday. Encloses answer to Duke of Newcastle regarding proposal for colonies. Welcomes any comments from JH.
Encloses letter from Colonial Office to R.S.L., which was referred to ES because [B. C.] Brodie was out of town. Brodie hopes to see JH when JH comes to London.