--Being well acquainted with
the mountains of Cumberland, I had remarked that a 'man' or cairn of
stones erected by the Ordnance Surveyors on the Great Gable had
covered up a curious natural stone trough, known as one of the
remarkable singularities of the country. This year, without giving any
notice to the Ordnance Surveyors, I sent two wallers from Borrowdale
to the mountain top, to remove the 'man' about 10 feet and expose the
trough. Sir Henry James afterwards approved of my act, and refunded
the expense.--I investigated the optical condition of an eye with
conical cornea.
"The Harton Colliery Experiment: I had long wished to repeat the
experiment which I had attempted unsuccessfully in 1826 and 1828, of
determining by pendulum-vibrations the measure of gravity at the
bottom of a mine. Residing near Keswick this summer, and having the
matter in my mind, I availed myself of an introduction from Dr Leitch
to some gentlemen at South Shields, for inspection of the Harton
Colliery. I judged that it would answer pretty well. I find that on
Aug. 11th I wrote to Mr Anderson (lessee of the mine), and on the same
day to the Admiralty requesting authority to employ a Greenwich
Assistant, and requesting _L100_ for part payment of expenses.
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