EXERCISE 112 (Continued) 



So far as you are acquainted with soil types, do you note 

 any correspondence between amount of organic matter and 

 fertility of soil ? 



Tabulate your results below: 



Description of soil No. 1. 



Description of soil No. 2. 



Description of soil No. 



Description of soil No. 4. 



Reference 



BERGEN and CALDWELL. Practical Botany, pp. 436, 437. 



[139] 



