Reply to GA's letter on Charles Babbage's calculating machine.
Reply to GA's letter on Charles Babbage's calculating machine.
Robinsons (Devonshire St.) have offered their standard Troy pound, together with its history for £20-0-0. [JH has added notes from his reply regarding the present whereabouts of the various Troy pounds.]
Further remarks on his letter concerning Charles Babbage's calculating machine (see GA's 1842-9-16) in order to clarify JH's mind.
Encloses the Chancellor of the Exchequer's letter concerning Charles Babbage's calculating machine.
Has arranged meeting to discuss N. L. Lacaille's observations. Sends a toy purchased in the streets of London.
Gives GA some accounting of standard weights in Britain, and feels that it would be worth acquiring Robinson estate weight [see GA's 1842-9-22].
A letter of introduction, asking GA to show the observatory to a Mr. Knipping from Hanover, a relative of JH's aunt Caroline.
Arranging a visit for GA to Collingwood.
Final arrangements for GA's visit to JH [see GA's 1842-3-15].
Comments on whether magnetic observations should be continued.
As many Russian observatories are now involved in magnetic observations, JH thinks the British observations should continue [see GA's 1842-1-22].