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FORE:

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FORE:Halley's quadrant was constructed and made known by him to the Philosophical Society, in 1731, though Thomas Godfrey, a glazier, of Philadelphia, is said to have made a similar instrument a year before. As early, however, as 1727 Newton had described such an instrument to Halley, that is, a very little time before his death. This invaluable instrument has since been improved, first into a sextant, and ultimately into a complete circle. In 1758 appeared John Dollond's corrections of Newton's views of the dispersion of refracted light, and in the following year his achromatic telescope, based on his accurate discoveries.Again, on the night between the 18th and 19th of April, General Gage sent a detachment of about eight hundred grenadiers and light infantry to destroy a dep?t of stores and arms at Concord. They were commanded by Lieutenant-Colonel Smith and Major Pitcairn, of the Marines. The alarm was given, fires were kindled, bells rung, guns discharged, and the country was up. The British troops reached Lexington at five o'clock in the morning, and pushed on their light infantry to secure the bridges. They encountered a body of militia under cover of a gun near the road, whom they ordered to retire, and they withdrew in haste.

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