1780 The Cornell Reading-Courses 



1. In what ways does the soil provide conditions for plant growth? 



2. How and to what extent does the physical structure or the tilth of 

 the soil affect its productive power? 



3. What is the physical nature of the soil in your region? Is it 

 gravelly or stony? Is it sand, loam, silt, clay, or some combination of 

 these? 



4. Are the soils in your region in good tilth? Are they either too com- 

 pact or too open for the best operation? By what means may they be 

 improved ? 



