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Discusses JSH’s attendance at Cambridge University medical examinations, for students who need to be examined in botany as well. Need for attendance uncertain.
Is grateful for the gift of his Prelim. Discourse. Had to pay 4/8 excess postage.
Thanks for the 4/8 postage. Query on William Hopkins's theory of the Earth's formation. Would be grateful for any scientific works.
JH's copy of the Nautical Almanac for 1864 will be forwarded to the R.A.S. J. H. Mädler has solved the problem of one of William Herschel's observations.
Outlining a method for making star maps with a pyramid.
Encloses [a diagram] of the transverse section of the entrance of the Great Pyramid, with details of the travelling platform for making observations.
Grateful for JH's congratulations. News of the education of his own sons. Pleased to hear of Warren de La Rue's success with photographing the pink projections during the total darkness. Recent astronomical observations. News of the Cape Electric Telegraph. Mr. Wollaston (a nephew of W. H. Wollaston) is about to make a survey for the telegraph wire. Gives details of the electric clock in connection with the transit circle.
Will not be able to produce his article in time for the January issue, but could write a much better article on meteorology if given longer, till July.
Circular letter advising of the availability of back copies of various Royal Observatory printed observations.