Encloses letter regarding coinage under discussion in Parliament.
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Encloses letter regarding coinage under discussion in Parliament.
Addresses problems in metric bill introduced to Parliament by William Ewart. Argues for the retention of the British system of weights and measures. Shows that the inch can be defined as one five hundred millionth of the length of the earth's polar axis.
Discusses in detail the then currently debated issue of a 'mintcharge or seigniorage' on gold coinage. Also discusses the idea of an international coinage.
Signing himself 'A.B.C.D.,' asks whether a priest is guilty of perjury for having refused to testify regarding a murder on the grounds that this would violate the seal of the confessional.
Times of 12 May called for remedy to industrial pollution. In 1838 JH visited soda production plant near Newcastle and suggested profitable modification to fume chimneys that removed harmful vapors and generated useful compounds.
Supports, for scientific and commercial reasons, the retention of the British system of measures, arguing against adoption of the metric or decimal system.
[It having been asserted in the Times that the Russians have not communicated about the climate at Pekin], JH notes that in fact wonderfully detailed meteorological observations for Pekin from 1850 to 1855 have been widely distributed by the Russians.
Calls public attention to an inexpensive process JH devised in 1838 to eliminate noxious acid fumes coming from manufacturers of soda.
Responds to objections published in the Times of 30 June to JH's 1864-6-18 letter to the Times regarding the introduction of the metric system in England; JH opposes this and goes on to explain the scientific basis of the British system.
Corrects typographical errors in JH's recent letters [1864-6-18 & 1864-7-1] to the Times.
Calls attention to sunspots then visible. [Written by JH under the pseudonym 'Helioscopus']
Corrects a misstatement JH made in his 1869-8-30 letter to the Times.