Page:Graphic methods for presenting facts (1914).djvu/242

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corrected by pulling out pins. Also, if there should be a reduction in the density of the population, pins can be pulled out, whereas with the pen-and-ink method of Fig. 181 it is not possible to proceed backward on the scale of marking and a decrease can never be shown without making another map or marring the old one.

Wm. Pierrepont White, of Utica, N. Y., in the New York Times

Fig. 182. Map Showing 3,500 Miles of Completed and Proposed State Roads, in New York's Proposed 12,000-Mile System. The Shaded Portion Shows a Strip Ten Miles Wide which Contains 90 Per Cent of the Taxable Valuation and 80 Per Cent of the Population


The object of the illustration is to show the necessity of a road system that will feed from the farms to the densely settled portion, permit the quick and easy transportation of farm products to the cities, lessen the cost of living, and thus justify the taxing of the State as a whole for the construction of this system


In Fig. 182 is seen a good example of the graphic method applied to newspaper writing designed to convince the reader by specific argument. The presentation is very effective. The shaded portion of the map shows a strip which contains 90 per cent of the taxable valuations and 80 per cent of the population. The possibilities for the use of maps in arguments of political or economic nature are almost