Proposes a principle for the establishment of musical scales to satisfy musicians, not mathematicians, as JH had apparently done.
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The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
Proposes a principle for the establishment of musical scales to satisfy musicians, not mathematicians, as JH had apparently done.
More on musical scales [see GA's 1868-4-3]; GA here proposes the use of hyperbolic logarithms to help establish the scales.
Further regarding his theories on sound.
Has received the bill of William Ewart concerning the metrical scale.
Is sending William Pole's protest against the system of equal temperament in music [abstract of protest given].
Stating that the Board of Visitors could not afford to lose the services of JH.
Further regarding the theory of sound.
Suggests reducing the number of Greenwich astronomical observations printed, but not reducing the magnetic and meteorological observations.
Not well enough to attend Visitation Day at the Royal Observatory; fears JH will not likely attend any future meetings and should perhaps withdraw from the Board of Visitors.
Thanks for gift sent to JH's daughter Amelia; comments on William Petrie's number mysticism with the Great Pyramid.