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 49
In the social aspect of this question, the horizontal measure-ment is justified by the fact that no more houses can be built on ahill than could be built on its flat base :and that no more trees, corn, or otherplants, which shoot up vertically, can growon it; as is represented by the verticallines… … Fig. 34.
Surveying
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