Saw J. S. Perring for only a short time. Explained his own theories and models of the Great Pyramid at the Royal Institution. Enlarges on his theories. Has been invited to lecture to the Sino-Egyptian Society.
Saw J. S. Perring for only a short time. Explained his own theories and models of the Great Pyramid at the Royal Institution. Enlarges on his theories. Has been invited to lecture to the Sino-Egyptian Society.
Unable to give in a letter the practical geometrical results he has worked out from the laws of the king's chamber of the Great Pyramid. It would grace a history of Egyptian astronomy.
Thanks for his letter. Any astronomical observations can be recorded on a plane or spherical surface. 108 equal cubes will exactly fill the coffer in the king's chamber of the Great Pyramid.
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.
Has received colored tracing from Italy of drawings by Col. Beek. Compares them with what may be done using the Great Pyramid.
Sending a printed circular on his proposed change in the currency.
Pointing out an error by JH in assigning the authorship of a weather table to Sir William Herschel.
Sends a lithograph of the 4-ft. aperture equatorial. Has made no observations with it yet. Had difficulty with the surface of the speculum. Comments on the drawing and on the use of the instrument. Cannot recollect seeing any of the irregularities pointed out by JH in his letter.
Pointing out the reasons for some apparent discrepancies in the drawing of his telescope. The drawing was hurriedly done by his daughter.
Was grateful for the copy of JH's article on the telescope. Sends parcels containing two specimens of 4-ft. specula; comments on these. Weather has been unsuitable for observations.
Thanks JW for his double star catalogue; JH comments on a few items contained therein.
Is grateful for JH's kind invitation to Collingwood, but regrets he cannot find time to come as he sails on the day after tomorrow and has much business to fit in before then.
Has experienced an extraordinary meteorological year and been kept busy observing all the changes. Is to submit another certificate to the R.S.L. and would be pleased if JH would sign it.
Thanks for signing his certificate for the R.S.L. Has promise of support from members of Council. Has just contrived a new ozone box; gives details. Carrying out observations with underground thermometers.
Is giving a dinner for the Hawkhurst Rifle Volunteers and would welcome JH's presence.
Has today dispatched a parcel to JH containing a copy of a Chinese translation of JH's work on astronomy; thinks this work will be of great service to the Chinese.
Comments on WL's 4-foot equatorial telescope of which WL sent JH a lithograph [see WL's 1860-2-8].
Comments on WL's nebulae diagrams and asks for more.
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.