In response to AH's 1828-10-8, JH writes to tell him of William Herschel's ideas on nebulae and the Magellanic Clouds.
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In response to AH's 1828-10-8, JH writes to tell him of William Herschel's ideas on nebulae and the Magellanic Clouds.
Regrets he was unable to meet him when in Hanover. Took no part in Guillaume Weber's operations at the Cape, but has become acquainted with them through Weber's volumes. Has pressed the Admiralty on the necessity of Magnetic Observatories at various places. Regarding AH's observations on the barometer.
Extensive letter answering the many queries about nebulae raised by AH in his 1844-4-18 [letter contains notes made by AH].
Sends thanks and very high praise for AH's first volume of Kosmos. Also comments on a number of other astronomical matters.
Answers questions raised by AH in his 1850-1-19 [letter contains notes made by AH].
JH has been delayed in replying to AH's 1851-8-13 because of official duties at the Great Exhibition. Comments further on several astronomical matters.
Convey his thanks to the King for the Order of Merit. Regrets he did not see the King or AH when they visited London recently. Gives astronomical information.
Writes to send thanks by way of AH to the King of Prussia for the award of the Order of Merit. JH also comments on some astronomical matters.
Offers some information on 'Coal Sacks' in Southern Cross [see AH's 1850-7-31]. Happy to hear that volume 3 of Kosmos is near completion.
Requesting the opinion of JH's late father on the nebulae in Orion.
Calling his attention to the works of J. C. Poggendorf and Guillaume Weber. Does he know of the ingenious work carried out at the Cape by C. F. Gauss and Weber?
Recounts details of his recent visit to England. Recent astronomical observations. Has JH heard from C. K. J. Bunsen about his award?
Sending a letter via Ca'colia Gibson raising various queries regarding nebulae.
Sending the first volume of Kosmos. Queries regarding the Magellanic Clouds.
Queries regarding JH's star lists. Sending magnetic information from A. T. Kupffer. Regarding the distribution of nebulae.
Is grateful for his constructive letter on the Coal Sack. Regarding the work of the Schlaginweit brothers.
News of the astronomical activities of his colleagues. Astronomical queries.
Introducing Adolphe Barth. Astronomical news and queries.
Sends a letter of praise for the family Herschel, including especially JH and his father, William.
Astronomical queries, with particular reference to the Coal Sack. [Probably to JH, but unclear from letter.]