j 72 *rbe Principles .of Part IV. 



fix two inches high ; N 3. were about the 

 fame height 3 N 4. had two, one of which 

 was one inch high j N 5. had three, each 

 two inches high. 



June 4. N 2. talleft and greeneft ; N 3. 

 very near it; N i. and 5. of an equal 

 height, but the latter of a very light colour , 

 N 4.worftofall. 



Aug. 20. N i. about nine inches tall, 

 and much withered. The roots feem not 

 to have pierced the clay, but to have funk 

 along the cracks. N 2. has nine ears, 

 and thofe of a very deep green colour. 

 N 3. has eight, but not of fo deep a green. 

 N 4. has five, and thofe much fmaller. 

 N 5. has nine, almoft as good as N 2. I 

 had no opportunity of feeing them after- 

 wards, 



Cor. i . By this experiment it appears, of 

 what great advantage it is to manure clay $ 

 for, of itfelf, pure clay is not capable of 



pro- 



