A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 429
2. Sloping up on all sides—i. e., a hollow (Fig. 448). 3. Sloping down on three sides and up on one—i. e., a croupe. Fig. 449. Fig. 450. Fig. 451. … BY HORIZONTAL CONTOUR-LINES. 415 or shoulder, or promontory, the end of a ridge or water-shed line(Fig. 449). 4. Sloping up on three sides and down on one—i. e., a valley,or thalweg (Fig. 450). 5. Sloping up on two sides and sloping down on two, alter-nately—i.e., a pas, or col, or saddle (Fig.…
Surveying
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