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"The showing of relief by means of hill shading gives a pleasing effect but is very difficult of execution, does not give exact elevations and would not be applied on maps to be used for engineering purposes. They may sometimes be used to advantage in reconnoissance maps, or in small scale maps for illustration." —French, 1911

Shoreline Hill Shading by Hachures Contour Map

"The showing of relief by means of hill shading gives a pleasing effect but is very difficult of execution,…