Needs time to consider GK's request. What connection is expected between [Clarendon] Press and each author, or among all authors in GK's proposed series?
Corrections to reports in 12 Mar. 1866 issue of Les Mondes regarding ecclesiastical titles in England, William Whewell's career, and W. T. Brande's role at Royal Mint. Also, English do not eat cats; 'catsup' is made of vegetables. Nor was JH's daughter [Maria Sophia] ever acquainted with late [Ludovico] Calandrelli.
JH responds with an assessment of the Indian observatories [see GA's 1866-9-24].
FW's suggestion to collect William Herschel's published works into one volume was considered earlier, but publishers found it not profitable. All works except two are in R.S.P.T., 1780-1818. [Letter continues 22 Mar.:] JH almost completed identifying and assembling all of WH's double stars and micrometrical measures. Thanks for calling attention to 'unpublished series of 400 'Guages [sic] ('hausters')" noticed by [Maximilian Weisse]. JH was not aware of these. [Letter continues 23 Mar.:] Does not approve of FW's suggestion to request subscriptions to fund collection of WH's works. [Note by copyist: List of differences between original letter and copy.] [Unknown annotation: 'Original in No. 2 Corresp. Tin box B.8.']
Has no knowledge of transactions affecting trust fund for W. H. B. Hollier, other than what JH noted in previous letters.
Forwarding copy of paper by Ernst F. W. Klinkerfues; EK purports to show that movement of a star toward or away from an observer will affect its refraction in an achromatic prism.
Agrees with GS's assessment of Ernst Klinkerfüss's paper [see GS's 1866-2-27].
Comments further on Ernst Klinkerfüss's work [see JH's 1866-2-28]; on the behavior of light emitted by an electric spark.
[Writing to a correspondent in Manchester], apologizes that because of illness JH unable to take chair at 'your College Meeting.'
Comments on some of CL's writings; further argues that a canal at Suez and/or Darien would have a major effect on European climate due to the effect of ocean currents coming through such canals.
Some minor suggestions regarding CL's proofs [see CL's 1866-10-19].
Appreciates the receipt of volume one of the tenth edition of CL's Principles of Geology.
Is trying to assist in finding someone to review a book [The Heavens] by [Amédée] Guillemin.
Opposes sending expensive scientific equipment for J. B. N. Hennessey to use in India; suggests instead a variety of useful observations needing to be made, using inexpensive equipment. Discusses son's [Alexander] spectroscope observations of meteors.
About William Whewell's accident, and the ideas of E. F. W. Klinkerfüss on the behavior of light due to the motion of a star source.
Further recommendations regarding useful equipment and observations to be made in India [see JH's 1866-8-11]. Agrees that meteorological experiments there are desirable. Offers JH's son John's experience of India to ES.
In response to ES's 1866-12-6, JH sees no benefit in a great equatorial telescope in India being an itinerant instrument.
Declines to be involved in another [scientific ?] undertaking, as JH's health is too precarious.
Is sending WH papers and material on weights and measures. Proceeds to argue strongly against any introduction of the metric system into India.
Comments on the quality of the star catalogue of Charles Rümker [see John Wrottesley's 1866-4-16].