Concerning the method of observation by direct and reflected vision.
Showing 41–53 of 53 items
Concerning the method of observation by direct and reflected vision.
Regarding H. C. Schumacher and the intended distribution of J. J. F. Lalande's catalogue.
Did he see the eclipse? Agrees with him over the H. C. Schumacher proposals.
Regarding the forthcoming meeting. Concerning the telescope used at Pulkowa.
Regarding magnetic disturbances.
Currents in telegraph wires.
Sending account of the magnetic disturbances of 24 September 1847.
A note enclosed with the printed observations made with the Northumberland equatorial telescope.
Agrees with GA [see GA's 1847-6-11] about paying up accounts.
About observing stars with the transit circle, and timing the annulus [of an eclipse?].
Was too cloudy to observe the eclipse; very worried about the health of Thomas Maclear.
Asks GA for details about the scientific support provided by Hugh Percy; also asks about the availability of star charts on the Berlin Academy scheme.
Replies to JH's 1847-11-14, with respect to Hugh Percy and star charts.