In Fig. 176 it would not be feasible to use a much smaller circle if the quarter-circles are used.

MAP PBESENTATIONS

Country Gentleman

Fig- 175- Relative Distribution in the United States of Cattle Other than Dairy Cows

For popular presentation, if great accuracy is unimportant, this method of illustration would be difficult to improve upon. It is not possible to get a correct comparison between any two States because any one circle cannot be fitted visually into the area of another circle. Compare the method used in Fig. 176

• 200,000 cattle.

9 ISO.OOO to 200,000 cattle.

9 100,000 to U0,000 cattle.

O eO,00O to 100,000 cattle.

O Less than tO.OOO cattle.

The heavy lines (mm) show geographic divisions.

Abstract of the Thirteenth Census of the United States, 1910

Fig. 176. All Cattle on Farms in the United States, by States, April 15, 1910

Here a definite scale is given which permits fairly accurate reading of the number of cattle for any State. The visual contrast between States is also quite striking. Though not so clear-cut as Fig. 175, this Illustration has more accuracy

21G

GRAPHIC METHODS

In making up copy for the line cut of Fig. 177 very little hand work was required. If an outline map of suitable size is available, the only hand work necessary for a cut of this kind is in drawing the small circles and placing inside them the figures serving as key numbers for the shading used. The actual shading is done by the engraver making use of the Ben Day process. For information regarding the preparation of engraver's copy for plates on which Ben Day shading is desired, see Fig. 233.