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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.
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.
Comments on WL's 4-foot equatorial telescope of which WL sent JH a lithograph [see WL's 1860-2-8].
Received JH's letter and enclosure of yesterday. Gave instructions to refuse newspapers arriving for JH without postage from Cape of Good Hope.
Has a foreigner staying at his house. Has seen letter by this man addressed to JH. TR wants to know if the foreigner is respectable. Thinks his name is [B.] Birkenthal.
Asks JH's opinion of a tuning fork design; includes plan of the instrument.
Thanks JH for advice on tuning fork. Further enquires about the instrument.