The different bars so closely grouped together ^jo-tit of thp nrpppdino- piirvp "Rv

are exceedingly difficult to interpret. See "gUL Ol LUe pieceuillg CUrVC. DJ

Fig- 102 repeating the last month of each

curve in this manner, the interpretation of the curves is much simplified SO that the reader can see at once what has been the tendency of the curve from December to January each year. If the December

o

ill

lip J"

o u->

Philadelphia Commercial Museum

Fig

COMPARISON OF CURVES

point were not represented at the left, it would be necessary for the reader to glance several times from the left-hand end of one curve to the right-hand end of the preceding curve to determine in his own mind just what changes had occurred from December to January

Millions

of

Tons

/

/

/ .■

,#'

/

/

/ /

/ --

/

.o<^^'

i^'

,y

4'

/

\ /

4''

^^

/

/ \

<.f''

&^^^

/ y

^TOTAi_

-roiiiiS

^

//

/

y^

/

•

^ro^

'

Domestrc

■

^ y

Nto.

/

^^

"n'mest-ic

■^r^ode

^^-w.

'•^^^

•

Millions

of

Tons

to

11350 I860 1870 1880 1890 1900

Fig. 102. Comparison since 1850 of the Merchant Tonnage of the United Kingdom with that of the United , States

Gross tonnage is given for the United States and net tonnage for the United Kingdom. Solid lines United States, dotted lines United Kingdom. The "total" figures are not strictly comparable because '

of the difference in registration method. The general tendencies of the curves are instructive, however. Note the reduction in the foreign trade of United States since the Civil War and the steadily increasing foreign trade of the United Kingdom