ol. Here Dr Traill recommended us to see the Pontycyssylte
Aqueduct, and we went by Chester and Wrexham to Rhuabon, saw the
magnificent work, and proceeded to Llangollen. Thence by Chester and
Northwich (where we descended a salt-mine) to Macclesfield. Then to
the Ecton mine (of which we saw but little) through Dovedale to
Ashbourn, and by coach to Derby. On July 24th to Birmingham, where we
found Mr Guest, lodged in his house, and were joined by my pupil
Guest. Here we were fully employed in visiting the manufactures, and
then went into the iron country, where I descended a pit in the
Staffordshire Main. Thence by coach to Cambridge, where I stopped to
prepare for the Fellowship Examination.

"I had two pupils in this portion of the Long Vacation, Turner and
Dobbs. On August 2nd my writing of Latin began regularly as before. My
principal mathematics on the quires are Optics. On August 25th I made
experiments on my left eye, with good measures, and on Aug. 26th
ordered a cylindrical lens of Peters, a silversmith in the town, which
I believe was never made. Subsequently, while at Playford, I ordered
cylindrical lenses of an artist named Fuller, living at Ipswich, and
these were completed in November, 1824.

"My letter to the Examiners, announcing my intention of sitting for
Fellowship (which like all other such documents is preserved on my
quires) was delivered on Sept 21st. The Examination took place on
Sept. 22nd and the two following days. On Oct. 1st, 1824, at the usual
hour of the morning, I was elected Fellow. There were elected at the
same time T.B. Macaulay (afterwards Lord Macaulay), who was a year
senior to me in College, and I think Field of my own year. I drew up
my letter of acknowledgment to the Electors. On Oct. 2nd at 9 in the
morning I was admitted Fellow with the usual ceremonies, and at 10 I
called on the Electors with my letter of acknowledgment. I immediately
journeyed to Derbyshire, paid a visit at Edensor, and returned by
Sheffield.

"On Oct. 11th (it having been understood with Mr Higman that my
engagement as Assistant Mathematical Tutor stood) the Master sent for
me to appoint me and to say what was expected as duty of the
office. He held out to me the prospect of ultimately succeeding to the
Tutorship, and I told him that I hoped to be out of College before
that time.

"About this time the 'Athenaeum,' a club of a scientific character,
was established in London, and I was nominated on it, b