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FARM AND SCHOOL PROBLEMS. 



CLIMATIC FACTORS OF THE UNITED STATES Concluded. 



A careful study of the corn and rainfall graph page 383 

 shows that the total yield of corn for the corn belt may be pre- 

 dicted from the rainfall during the month of July. 



An inch of rainfall may mean an increase of millions of 

 dollars in the value of the corn crop. 



A close observation of the rainfall will enable us to deter- 

 mine the amount of tillage and cultivation that may be necessary 

 to conserve moisture. 



After the class in agriculture has made a thorough study of 

 the weather statistics of the county, the following conclusions 

 should be tabulated : 



1. What were the years of best and poorest yields in certain 

 crops? Give cause in your opinion. 



2. What was the precipitation in July in the year producing the 

 highest yield of corn? Was it above or below normal? 



3. In the year of greatest yield of oats, what was the precipitation 

 and temperature in June and July? 



4. What was the observation relative to temperature and pre- 

 cipitation in the months of June and July, when there was the 

 largest yield in potatoes? Was it below or above normal? 



