No summary available.
Showing 1–20 of 43 items
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No summary available.
Regarding electrometers and their efficiency.
Further regarding glass for telescope. Postscript relating experiments with electricity.
No summary available.
No summary available.
Has JH received Thomas Maclear's observations on Encke's comet?
Has not heard from Thomas Maclear [see GA's 1844-3-12]; has the Cape equatorial object glass been dealt with?
Comments on the large number of stars identified in one square degree of sky.
Regarding Cape Town telescopes. Has written to Thomas Maclear for observations on Encke's comet.
No summary available.
Regarding JH's forthcoming visit to the Greenwich Observatory.
No summary available.
No summary available.
Whether a repulsive force from the sun affects the tails of comets and thus the constancy of their orbits.
Arrangements about attending a meeting, together with some thoughts on the behavior of comets.
Regarding object glasses for telescopes. Relative merits of Munich and French object glasses.
Further observations on object glasses.
Will try to organize an international magnetic conference at the B.A.A.S. meeting in 1845, if GA agrees.
Does not believe that a magnetic congress held at this time would be productive or representative; a better job could be done by letter.