Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 113
Fig. 212. :MUD-^^^=^= ^toa?^ … ^^^ p^ Fig. 213. Fig. 214. Fig. 214 represents a river, with mud and sand banks. Sand is designatedby fine dots, made with the point of the pen; mud by a series of short parallellines. Gravel is represented by coarser dots, and stones by irregular angularforms. Water is almost invariably…
Mechanical drawing
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