On July 9th we walked by Rowsley and Haddon Hall over the hills to
Edensor, where we stayed till the 12th with Mr Smith. We next visited
Hathersage, Castleton, and Marple (where I wished to see the canal
aqueduct), and went by coach to Manchester, and afterwards to
Liverpool. 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.
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