\ .Jri5; shown at the left

\ .„:,'////// of the illustration

V '^''"'^^^ gives an idea of

\ ...„„M// what can be done

O '^'^^--'^^^^'^ by hand drawing

\ .,..yyy//// m order to at-

\ . -^.'^y//// S ^ tract attention to

\ .„^y////// ^5 ^ S S » s » the chart itself is V.:.^.^.^ ^ ^ S 3 S S S intended to illu-

Unifed States Mexico Spain & Jaoan Chile Australia Germanv Canada

^°''"8"' minate. In this

493,476 01,000 54,188 44,310 4S.043 34,339 34,298 28,733

PIHHps' Chamher of Commerce Atlas CaSC thc IcttCring

Fig. 25. A Year's Production of Copper in Tons also has been done

This illustration was copied from a prominent book on international trade. bv hand and is a Accurate interpretation of the chart is impossible. Graphic work of this sort is dangerous because it may be misleading gOod example of

what a skilled draftsman may do without any great expenditure of time. The solid black bars of Fig. 24 come out in much better contrast than the gray bars of Fig. 23.

SIMPLE COMPARISONS

I-Vderaled Malay States 68,856

BoliWa

Fig. 25 shows a chart of the same data from which Fig. 24 was drawn. It is readily seen that it would be impossible for the average reader to tell whether this chart was drawn on the basis of height or the basis of area. The pigs of copper are not of the same size in the different piles, and it is evident that a pictured pig of copper is not intended to be the unit. If Fig. 25 is drawn on an area basis, it is almost impossible for the eye to fit the area for the right-hand pile into the area of the left-hand pile. This chart is a typical example of thousands of illustrations used by the popular magazines and even by some of the more pretentious reference books.