Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 203
ind the latitudes and departuresof the other sides as usual. Thedifference between the northingsand southings will give the north-ing or southing of the unknownside, and the difference betweenthe eastings and westings will givethe easting or westing of the un-known side. If the length and bearing… … Fig. 23 § 18. Irregular Boundaries. If a field have irregular boundaries, its area may be foundby offsets, as explained in § 14, Prob. 3.- § 19. Obstructions. If the end of a line be not visible from its beginning, or ifthe line be inaccessible, its length and bearing may be foundas follows:…
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