About JH's visit to Carl Friedrich Gauss, and Gauss's well-devised magnetic measuring instruments.
About JH's visit to Carl Friedrich Gauss, and Gauss's well-devised magnetic measuring instruments.
A notice of meeting of the Standards Commission.
The Standards Commission will need to meet soon; JH is asked to indicate most convenient, and most inconvenient, days. [See GA's 1838-6-9].
Trying to organize a meeting time for the Standards Commission that will suit everybody; GA wants to make very few changes in the standard relationships [see JH's 1838-11-18].
A notice of meeting of the Standards Commission.
A note along with letters from R. A. Cauchoix, the telescope maker, and [J. C. Spencer,] Lord Althorp, about the B.A.A.S.; JH is trying to clean up observation reports before leaving for the Cape.
About the question of an astronomer for a vacant position at Kew Observatory.
Further about the telescope to be donated by Hugh Percy [see JH's 1833-8-15], along with a promise that JH will write to R. A. Cauchoix about the telescope.
No one on committee has taken sufficient initiative to obtain funding for magnetic instruments. Hopes S. H. Christie and JH will act in this regard. Discusses doubts about South Polar magnetic expedition.
Encloses graph of C. F. Gauss's magnetic observations.
Giving observations on stars. Discussion of clock rates and sky sweeps.
Informing JH that he and GA have just been appointed to a committee to consider the extension of the Astronomical Society's catalogue. Observations on this catalogue.
Wants JH's views on a 20-foot reflector. Inviting him to Cambridge. With this letter he encloses Volume 2 of the Cambridge Observatory's Observations and Lectures in Optics.
Sends volume of observations. Remarks on A. J. Fresnel's experiments. Lists errors in JH's treatise on light. Requests information on circular double refraction.
Encloses paper 'Figure of the Earth.' Wants information on rays in quartz. Has tried A. J. Fresnel's experiments.
Opinion on M. C. T. Damoiseau's theory and tables; worth a medal.
Remarks on Greenwich observations.
Wants 100 of JH's star forms. Wants any information on a collection of observations of Venus.
Informs JH that he has published a new edition of his tracts (to turn Cambridge mathematics to physical applications). Wants his permission to use his theory on biaxial crystals. Remarks on David Brewster's theories and experiments.
Has been making optical experiments. Hopes to see JH in the Spring. Hopes JH will be able to observe Encke's comet this year.