The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 214
Due SouthFig. 54. SURVEYING METHODS. I85 … Fig. 55. COMPUTING THE AREA. 171. The Method stated.— InFig. 55 * let ABCDE be the tract whosearea is desired. Let us suppose thebearings and lengths of the severalcourses have been observed. Pass ameridian through the most westerly-corner, which in this case is the cornerA. Let fall perpendiculars…
Surveying
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