On
Apr. 23rd I was practising pendulum-observations (by coincidence); and
about this time repeatedly practised transits with a small instrument
lent by Mr Sheepshanks (with whom my acquaintance must have begun no
long time before) which was erected under a tent in the Fellows'
Walks. On my quires I find various schemes for graduating thermometers
for pendulum experiments.
"I find also Notes of examination of my brother William, who had come
to College last October; and a great deal of correspondence with my
mother and sister and Mr Case, a lawyer, about a troublesome business
with Mr Cropley, an old friend of G. Biddell, to whom my father had
lent _L500_ and whose affairs were in Chancery.
"My lectures in this term were to the Junior Sophs from Apr. 10th to
May 13th: they were six in number and not very regular. On Apr. 28th I
sent to Mawman the copy of my Trigonometry for the Encyclopaedia
Metropolitana, for which I received _L42_. I received notice from the
Press Syndicate that the price of my Mathematical Tracts was fixed at
_6s. 6d._: I sold the edition to Deighton for _L70_, and it was
immediately published. About this time I have letters from Mr Herschel
and Sir H. Davy about a Paper to be presented to the Royal Society--I
suppose about the Figure of the Earth to the 2nd order of ellipticity,
which was read to the Royal Society on June 15th.
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