Since it is difficult to determine the approximate height or length of any one of the sections of a bar, it might be better to put the percentage scale at both left and right, or top and bottom.

2. The shadings should follow the general rule that when no one thing is to be emphasized, the darker shadings should be next

100%

100%

All Ort.«r

tUso ureas

, rOttMr Loons and Discounts

Savings Ranks

Loon ond A||

ComlJo'n... B<'"'*» 13,116,830 ^57,24^131

100%

n-7

AllOthflf Asstfhs

Policy Loana

oblicUtilHy &ond«

vemnwnt Bonds

rorm ond Oth«r

Railrood ondt and

18-^

9^

6.5

dS^

LiF* Injuranc* ComponiM 4 20. 7501 OOa 000

T,f,lAsitft.C>0c3l,l932

American Aasociation of Automobile Manufacturer!, New York City.

SCALE ,8

Percentage of Total Resources or Assets of Banks and Life Insurance Companies in the United States Invested in Various Types of Securities, Loans, or Other Assets in 1932.

COMPARISON OF 100% BAR CHARTS

to the zero line. A section to be emphasized should be the darkest shade.

3. Connecting lines from one bar to the next aid the reader.

TOTAL 949,338

993,597

951,015

WPA. National Research Project, "Summary of Findings to Date." March, 1938.

Percentage Distribution of Wage Earners Employed in the Mineral Industries In the United States in 1909. 1919, 1929, and 1935. MILLION

ANNUAL

TOTAL

INCOMES

PCRSONS

IN BILUON DOLLARS TOTAL INCOME

>IOOO AND UNDER

•I000TO2000

'2000TO5000

.5000 TO )5000

•ABOVE I5000<

S. S. Wycr, "LivinR Together in a Power Age," Association Pres^, New York, 1936. 8CALK .9