102 Economic Cycles: Their Law and Cause 



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I" 



i- 



-t* -+ */* *Jt +St -II -/ ff t/J +f 



Percentage change in the yie/d per acre of com frrcentgge change in the yield per <tc/T? of hay. 



Percentage change in the yield per acre of oars. Percentage chsnge m the yield per acre of potatoes. 



FIGURE 22. The relation between the price and the yield per acre of the 



several crops. 

 When the origin is at (0,0), the equations are 



yrs. 1866-1889, _ .., i/ 2.00 1.0299x+.01926x .00031 2x*. 



yrs. 1890-1911, , y = 3.06 1.4894x+.01737z .000049x. 



yre. 1866-1889, - _, y = 5.72 1.6435x+.07798x .(XK)574x. 



yrs. 1890-1911, , y= 5.41 .7306x .00591x-f-.000075x. 



yrs. 1866-1889, .._, y = 2.78 1.6039x.00546.r+. 000778*'. 



yrs. 1890-1911, , y = .99 1.0240x+.02394z .000383*'. 



yre. 1866-1889, . . ., y = 3.92 1.4424* -f .01684x .000020*'. 



For corn 



For hay 



For oats 



For potatoes 



yre. 1890-1911, ,|/ = .91 1.6068* +.03831* .000397*'. 



