Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 117
resenting hills, but is only to be recommended when lines have been tracedand it becomes a record of facts. Fig. 230 represents, on double the scale, the … Fig. 230. half of the hill (Fig. 227), with one half completed by drawing the interme-diate contour-lines. The objection to the drawing of hills by any system is that the depths ofshade representing different slopes conflict with the lights and shades of the TOPOGRAPHICAL DRAWING. 101 drawing, and…
Mechanical drawing
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