By Edwin Danson
The 1st well known historical past OF THE MAKING OF THE MASON-DIXON LINE
The Mason-Dixon line-surely the main well-known surveyors' line ever drawn-represents one of many maximum and such a lot tricky medical achievements of its time. yet at the back of this crucial triumph is an exhilarating tale, person who has to date eluded either historians and surveyors. during this engrossing narrative, expert surveyor Edwin Danson takes us on a desirable trip with Charles Mason and Jeremiah Dixon, proficient and exuberant English surveyors, during the fields and forests of eighteenth-century the United States. Vividly describing lifestyles within the backwoods and the hardships and risks of frontier surveying, Drawing the road discloses for the 1st time in 250 years many hitherto unknown surveying tools, revealing how Mason and Dixon succeeded the place the easiest American surveyors of the interval failed. In obtainable, usual language, Danson masterfully throws the 1st transparent mild at the surveying of the Mason-Dixon line. Set within the social and old context of pre-Revolutionary the USA, this booklet is a spellbinding account of 1 of the good and ancient achievements of its time.
increase compliment for Drawing the Line
"Drawing the road combines a fast-moving tale, a human drama, and a transparent account of surveying within the period of George Washington. An interesting interplay of politics and science."-CHARLES ROYSTER, Boyd Professor of historical past, Louisiana kingdom college, and Winner of the Bancroft Prize in heritage
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Additional info for Drawing the Line: How Mason and Dixon Surveyed the Most Famous Border in America
The last, and most important, time measure used by Mason and Dixon was sidereal (star) time. Sidereal time is similar to apparent time in that it is observable, but with the essential difference that its rate is constant. A sidereal day is the time taken between successive transits of the First Point of Aries (or any star) across the meridian, and is approximately 3 minutes 56 seconds shorter than a mean time day. The value of sidereal time to Mason and Dixon was that it was synonymous with a star’s right ascension as it crossed the meridian.
Scriven, circa 1800. ) strolling around the quad below. The next year Maskelyne met and greatly impressed the astronomer royal, Dr. Bradley, and developed a friendship that lasted to Bradley’s death seven years later. A. in 1757 and in the same year was elected a Fellow of Trinity. The following year his scientific prowess was recognized with his election to a fellowship in the Royal Society of London. Maskelyne studied under James Bradley, observed his methods, and emulated his many skills. He assisted in preparing Bradley’s table of refractive indexes that were eventually published in the Nautical Almanac in 1767.
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Drawing the Line: How Mason and Dixon Surveyed the Most Famous Border in America by Edwin Danson