Is sending him the second edition of his book on magnetic attractions. Comments on the views put forth in this work.
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Is sending him the second edition of his book on magnetic attractions. Comments on the views put forth in this work.
Regarding the magnetic polarity of the earth.
Regarding his own experiments with revolving balls.
Has completed one of his telescopes. Sends a paper which he hopes JH will accept.
Regarding his own forthcoming experiments with his telescopes.
Regarding his own experiments with light.
Plan for the comparison of the strengths of variously sized telescopes.
Outlining his scheme for the comparison of the strengths of various telescopes, which JH seems to have misunderstood.
Further regarding his projected comparison of telescopes. Did not realize that JH was still working on double stars.
Has examined the stars listed by JH with his telescope and gives the results of his observations.