260 



PROCEEDINGS OF THE OHIO ACADEMY OF SCIENCE. 



its effect upon the yield of winter wheat in Ohio. Just why this 

 is so remains to be answered along with a great many other 

 similar questions. 



A FEW OF THE PROBLEMS 



Why are oats grown so extensively in northern Ohio and 

 not in the southern portions of the State? Why is it that head 

 lettuce is grown with such splendid success in the green houses 



Figure 6. Curve chart showing the relation between the snowfall 



in March at Wauseon, Ohio, and the yield of winter wheat in Fulton 

 County. 1892 to 1914. 



about Boston but cannot be grown at all in the vicinity of 

 Cleveland? 



What is the length of the growing season of a crop planted 

 at different times and under different climatic conditions ? Are 

 crops being planted at such times as will bring that period of 

 their development when they need much water at the season of 

 the year when there is an abundance of rainfall, or does it come 

 when there is little rainfall ? Is the value of an early crop great 

 ■enough to warrant planting so early that it will be killed by 



