216 



ILLINOIS STATE ACADEMY OF SCIENCE 



tors to handle the grain, and the building of railroads 

 were the more important. 



Fig. 1. Production of wheat in units of 10,000 bushels in the six counties of 

 Southeastern Minnesota by five year periods from 1860 to 1920 inclusive. 

 Data for the even years is from the United States Census, for the odd years 

 from, the annual reports of the Commissioner of Statistics for Minnesota. 

 Statistics for 1905 and 1915 are not available. The graph shows that in these 

 counties the period of bonanza wheat farming extended approximately from 

 1865 to 1885. 



