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Another circumstance in my life which made some alteration in my mind and manners, was, that I spent my nineteenth summer on a smuggling coast, a good distance from home, at a noted school, to learn mensuration, surveying, dialling, etc., in which I made a pretty good progress. But I made a greater progress in the knowledge of mankind.
The point is a small one. The important thing is, that in his seventeenth or nineteenth summer he went to a noted school on a smuggling coast to learn mathematics, surveying, dialling, etc., in which he made a pretty good progress. 'But, he says, 'I made a greater progress in the knowledge of mankind.
He was himself versed in the mathematical sciences, in navigation, in astronomy, dialling, gauging, gunnery, fortification, the use of the globes, the projection of the sphere upon any circle, and many another matter essential for the complete sailor, soldier, or navigator and adventurer of any kind.
Another circumstance in my life which made some alteration in my mind and manners was that I spent my nineteenth summer on a smuggling coast, a good distance from home, at a noted school, to learn mensuration, surveying, dialling, etc., in which I made a pretty good progress. But I made a greater progress in the knowledge of mankind.
In February, 1809, he writes: "My studies are at present Optics in Philosophy, Dialling, Homer, beside disputing, composing, attending lectures etc. etc., all which I find very interesting and especially Mr. Day's lectures who is now lecturing on Electricity."
In this I shall set forth the rules for dialling, showing how they are found through the shadows cast by the gnomon from the sun's rays in the firmament, and on what principles these shadows lengthen and shorten.
The shadow of the sun roughly gave those who were familiar with astronomy the lay of the land and the time, approximately. When the dial and the gnomon were understood, dialling became a popular science, and ere long the sundial on the church tower, in a public place, or in a private garden, told the time.
In this book I have put what I could about the merits and varieties of water, its usefulness, and the ways in which it should be conducted and tested; in the next I shall write about the subject of dialling and the principles of timepieces.
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