T6 



ANAl.v IK' OKOMi I i:v 



CH, iv. 



the table have been plotted (Fig. 38) ami thm j,,ino<l by straight lim-s, 

 dotted for Great Britain m-1 lull for the United State*.* 

 the figure. 



/ 



of 06 ' 



Fio.38. 



7. Exhibit graphically the information contained in the following 

 table on the expense of moving freight per " ton-mile " on N. Y. C. & 

 H. R. R. R. from 1866 to 1893. 



1873 1.03^ l*s<> 



1874 .98 1*M 



1867 1.95 



1868 1.80 



1869 l.l.i 



1870 1.15 



1871 1.01 



1872 1.13 



1875 



1*77 

 1878 



1.03J 

 .98 

 .90 

 .71 

 .70 

 .60 

 M 



1883 

 1884 

 1885 



issij 



.54^ 



.56 



.60 



.68 



.62 



.54 



.53 



1887 



1SSH 



.59 

 .54 



1893 .54 



L801 



8. The following table gives the population of the countries named 

 between 1810 and 1896 : f 



In the figure the linear unit on the x-axis is 5 times as long as the lin* ar 

 unit on the y-axis. It will, however, be noticed that the esst-ntial f< attire of 

 a system of coordinates, the "one-to-one correspondence " of the symbol 

 (x, y) and the points of a plane, is not disturbed by using different scales for 

 ordinates and abscissas. 



t The authors are indebted to Professor W. F. Willcox of Cornell Univrr- 

 rity for these data, which are compiled from t ,an's Year Bo< 



1897, and from StatUttk de* Deutscben Beichs, Bd. 44, 1892. 



