QUESTIONS AND PROBLEMS 237 



deep on the north and 18 inches deep on the south. This 

 is filled with firmly tramped horse manure that is just 

 beginning to heat. It is covered with about six inches of 

 good soil, and is then ready for the window-sash. Before 

 making such a hotbed, one would do well to buy the sash 

 and make the bed to fit it. 



QUESTIONS AND PROBLEMS 



1. Make a study of Appendix Tables 11, 13 and 14. 



2. What are the average crop yields in your region? How do they 

 compare with the averages for the United States? 



3. What are the average yields on the best farms of the region? 

 Why are these higher than on the average farm? 



4. What crops in your county are most valuable? Which ones 

 occupy the most area? 



5. What is a low barometer area? What relation has this to storms? 



6. Can rain be made by explosives or by other means? 



7. What use can a farmer make of the United States weather maps? 



8. How long in advance can weather conditions be foretold? 



9. Can plants or animals foretell the weather? 



10. Is there a compensating cycle in the weather? Is there any 

 truth in the statement " March comes in like a lamb and goes out like 

 a lion; or, if it comes in like a lion, it goes out like a lamb?" Does a 

 pleasant January indicate a disagreeable February? 



11. Does the moon affect crops? 



12. Does the climate of a region change in a man's lifetime? If 

 not, why do so many persons think that it does? 



13. What is the average annual rainfall in your county? What 

 part of this falls during the growing period? 



14. What is the average temperature of the year? Of the growing 

 months? 



15. What is the average date of the last killing spring frost? Of the 

 first killing fall frost? How many days are there between frosts? 



16. At what date may each of the leading crops be safely planted 

 in the region? 



17. What is the length of a June day in Louisiana? In Illinois? 

 In Manitoba? Of what importance is this to farmers? 



