The Mechanism of Cycles 



97 



Percentage change in the yield per sere of oats Percentage change in the yield per acre of potatoes 



Figure 21. The relation between the price and the yield per acre of the 



several crops. 

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



For corn, y = .17 — 1.2989.r + .01892x2 — .000137x 3 . 

 For hay, y = 1.17 — 1.0215x 4- .01549x2 + .00009x 3 . 

 For oats, y = — 1.49 — 1.1346* + .02324x2 _ .000238x 3 . 

 For potatoes, y = .49 — 1.4863* + .01993x2 — .000141x 3 . 



