Encloses copy of JH's essay entitled The Yard, the Pendulum, & the Metre... (1863). Speculates on causes for deviation in pendulum measurements. Recommends using torsion gravimeters in 'proposed operation.'
Encloses copy of JH's essay entitled The Yard, the Pendulum, & the Metre... (1863). Speculates on causes for deviation in pendulum measurements. Recommends using torsion gravimeters in 'proposed operation.'
Received notice to transfer one-fifth of funds from [Mary Anne Babbage's] 1823 marriage settlement to W. H. B. Hollier.
Just read [?]'s article on [John?] Blackwood. JH's views on effectiveness of [Robert] Peel's act and on relative roles of government and Bank of England in nation's economy.
Received [?]'s paper no. 10, which completes JH's collection. Returns duplicates of [?]'s papers on Kew and Nerchinsk 'disturbances' and on 'Residual Laws of disturbance.'
Letter of introduction for William Walker, who wants to show Walker's nearly finished engraving, Distinguished Men of Science Living 1807-8, to JH.
Relation of British imperial units of weight to their 'geometrical synonyms.'
Develops mathematical theorem.
Relation of imperial measures of capacity to their 'geometrical synonyms.'
Criticizes point in [recipient's] scheme for issuing bank notes.
Committee pamphlet expressed incorrect representation of JH's views on changes in British standards of measurement.
[Writing to a correspondent in Manchester], apologizes that because of illness JH unable to take chair at 'your College Meeting.'
Comments on the preparation of an article on light by JH for publication in Good Words.
Declines to be involved in another [scientific ?] undertaking, as JH's health is too precarious.
Fragment of a letter discussing diffraction, JH's son's journey to observe eclipse and strong polarization of sun's corona, evidence of vast solar atmosphere.
Please thank Dr. Gardner for his 'Calendar for the Correction of Dates.'
In response to the gift of a book, JH comments on the philosophy of knowledge, and goes on to say that JH agrees with [John Stuart ?] Mill's rejection of the syllogism as a means of argument. In the postscript, JH comments on the nature of heat.
Is a listing of some of JH's papers in an attempt to clarify how many were distributed, and then JH indicates how many he will send to addressee.
Comments on the behavior of Sirius with its companion, and on the likelihood of the existence of the inter-Mercurial planet.