■ t~. ^ »

7 ,

It j !_:!.:"-:=_ ±± i!

> „

^ I

i1 ■

1 1

"" • ~- '3

i» _

i '. 1

" »

1 _^

_ - 3

^.

.1 > . ..... 1 . . 1 i I ..

: ___±:_: :_:?

>IacElwee 8s Crandall. Inc . N Y C SCALE .4

B. The Trend In Length, Breadth, and Draft of North Atlantic Passenger Ships from 1830 to 1940.

1. The purpose of this chart was to determine the trend in length, breadth, and draft of

passenger ships so that docking facilities might be planned for the future.

2. As the newer ships were placed upon the chart, it was found that the calculation of the

trend was unbelievably accurate.

Chapter 15 COMPARISON OF COMPONENT BAR CHARTS

X he term "component bar" may refer to any bar which has been divided into parts. The charts in Chapters 10 and 11 are component bars in which each bar represents 100%, and the comparison of the component parts is the important item. In this chapter, divisions of the bars are made without reducing all bars to the same length.

Of DOtXARS

pueuic WORK

PRIVATE WORf

Federal Reserve Agent, New York, "Monthly Review," Feb. 1, 1937. SCALE .7

A. Total Value of Building and Engineering Contracts in Thirtyseven of the United States, Showing the Proportion of Private and Public Construction from 1932 to 1936.

1. Here the component parts arc labelled

in percentages, facilitating the reading of the chart.