Writes to FM to show several ways in which a series of prisms may be used in a spectroscope to have the light exiting in the same line as it entered the spectroscope. [Appends 4 pages of diagrams.]
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Writes to FM to show several ways in which a series of prisms may be used in a spectroscope to have the light exiting in the same line as it entered the spectroscope. [Appends 4 pages of diagrams.]
FM has published, in translation, JH's article ['Weather and Weather Prophets' (1864)], already published in Good Words. JH was not aware that this was FM's intent, and JH warns him that some editors may be sensitive about such matters.
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.