. Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819 and '20 : by order of the Hon. Calhoun, sec'y of war: under the command of Major Stephen H. Long. From the notes of Major Long, Mr. T. Say, and other gentlemen of the exploring party. Indians of North America; Discoveries in geography; Indians of North America. Astronomical and Meteorological Records, &?c. Observations made at St. Louis, Missouri Territory. June 15, 1819. June 16, 1819. Meriiliaii double altitude of ? suii's lower limb 5 Latitude deduced - 148° 54'22'' 38 36 14 N. Magnetic d
. Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819 and '20 : by order of the Hon. Calhoun, sec'y of war: under the command of Major Stephen H. Long. From the notes of Major Long, Mr. T. Say, and other gentlemen of the exploring party. Indians of North America; Discoveries in geography; Indians of North America. Astronomical and Meteorological Records, &?c. Observations made at St. Louis, Missouri Territory. June 15, 1819. June 16, 1819. Meriiliaii double altitude of ? suii's lower limb 5 Latitude deduced - 148° 54'22'' 38 36 14 N. Magnetic dip by a mean of se- ? veral experiments 5 70 30 Equal altitudes of Sun to find the error of Time-piece. Time from Noon, A. M. Error of Time- June 16, 1819. *d mean of eight Lunar distances, and the time corresponding, was found as follows. Time per Chrono- Distance of nearest meter, A M. limbs. June 16, 1819. 6" 34' 261' 69° 51' 30i" Index Error. + ^5^ Data resulting from the foregoing Lunar Observations. St. Louis, June 16, 1819. In latitude 38° 36' 18" N. and longi- tude about 6" W. of the meridian of Greenwich, at 6^ 34' 26^" A. TVI. civil account per chronometer, the distance of the nearest limbs of the sun and moon was observed to be 69** 51' 46" to find the lon- gitude. Longitude deduced, 6" 00' 25", or 90° 06' 15" W. of Greenwich. »N*ote. The chronometer run down on the night of the 16th, so that the subsequent error in time, compared with the preceding, aflfords no data to estimate the rate of the time-piece. Equal altitudes of Sun to find the error of Time-piece at noon. June 17,1819. Time from Noon A. M. 4h 42' 23" 4 41 03 4 39 42i Time from Noon, P. M. Error of Time- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original James, Edwin,
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Keywords: ., bookauthorad, bookcentury1800, booksubjectdiscoveriesingeography
