Sending the speculum to Slough in order that JH may examine it. Departs for Paris tomorrow. Hopes to see him at the Cambridge meeting.
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Sending the speculum to Slough in order that JH may examine it. Departs for Paris tomorrow. Hopes to see him at the Cambridge meeting.
Will JH be able to dine with the other visitors at Greenwich on Saturday? JH has been awarded a Royal Medal. Thinks JH is wrong in not desiring a passage to the Cape in a Man of War.
Will check to see whether JH has a spare telescopic mirror JH can give TH. Comments on observing Gamma Virginis and other double stars.
About observing binary stars. JH has decided not to accept the offer of passage on a war ship to the Cape of Good Hope, as he wishes to be beholden to no one for the results of the expedition.
Having been provided with answers by JD to some questions by JH about color-blindness, JH now comments on them and offers some theoretical considerations.
It appears that Peter Stewart, MH's brother, is fighting some kind of battle, the outcome of which will affect the whole family. JH wants to help and offers £5000 through MH to Peter. JH has just completed writing his Treatise Astr.
Recounts details of his visit to England. Gives his own recent astronomical observations. Is sending this via G. B. Airy in case JH has left.
Has performed some Newton's rings interference experiments. Asks whether such experiments have already been communicated to the R.S.L.
JH is 'immersed in my nebulae . . .working day and night for dear life'; also found another double star. Urges MH to come to Slough with her mother and brothers.
Trying to understand David Brewster's results on absorption of light in gaseous state, and the dark lines in solar spectrum, the cause of which he misunderstands.
Answer to FB's queries regarding chronometers.
Is pressed by work, but will come to London if needed; domestic matters brought up to date.
Intends to visit WS after attending Cambridge B.A.A.S. meeting.
Will be able to receive JH during Cambridge trip.
Inquires about the time when WP will paint JH's portrait and about the costs involved.
Outlines possible program for Wednesday.
Would like his opinion on the enclosed plan regarding chronometers.
His son Thomas has set out for France and he himself is in London to see the passage of a bill through Parliament. Would be grateful for letters of introduction to M.P.'s with which JH is acquainted.
Regarding Society matters. Small parcel has arrived for JH.
Has sent to Francis Baily a copy of his Sailing Directions and a roll of charts. Hopes JH will point out any errors he may note.