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LETTER THE THIRD.
From a Half-way House between Cambridge and Newmarket.
March 26, 1789.
SIR,
Having long been earnestly engaged in the study of mathematical science, and being fond of riding, two pursuits usually thought incompatible, I have been enabled, by means of this singular union, to strike out some important discoveries in both branches. The mathematical improvements in riding will, I hope, deserve a place in the Annals of Horsemanship: my equestrian discoveries in mathematics you must permit me to reserve for the Ladies Diary.
My love for equestrian agitation is, I believe, more general than that of any other person; for whatever satisfaction may be
