"On Feb. 21st my Paper 'On the nature of the light in the two rays of
Quartz' was communicated to the Philosophical Society: a capital piece
of deductive optics. On Mar. 2nd I went to London, I suppose to
attend the Board of Visitors (which met frequently, for the proposed
reform of Pond's Observations, &c.). As I returned on the outside of
the coach there occurred to me a very remarkable deduction from my
ideas about the rays of Quartz, which I soon tried with success, and
it is printed as an Appendix to the Paper above mentioned. On Mar. 6th
my son George Richard was born."
Miscellaneous matters in the first half of this year are as follows:
"Faraday sends me a piece of glass for Amici (he had sent me a piece
before).--On Apr. 9th I dispatched the Preface of my 1830
Observations: this implies that all was printed.--On Apr. 18th I began
my Lectures and finished on May 24th. There were 49 names. A very good
series of lectures.--I think it was immediately after this, at the
Visitation of the Cambridge Observatory, that F. Baily and Lieut.
Stratford were present, and that Sheepshanks went to Tharfield on the
Royston Downs to fire powder signals to be seen at Biggleswade (by
Maclear) and at Bedford (by Capt.
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