DR. DAUBENY ON THE ROTATION OF CROPS, ETC. 

 The following diagram will show the variations in their yearly produce :- 



193 



Turnips. 



Years. 



250 

 240 

 230 

 220 

 210 



200 



Shifting ... 

 190 



Permanent . 

 180 

 170 



160 



150 



140 



130 



120 



- 110 



100 



90 



80 



70 



60 



50 



40 



30 



In the contiguous bed recently manured the produce was 152 lbs., a quantity about 

 intermediate between the average of the shifting and permanent crops. 



4. Cannabis sativa. 



The next crop I shall notice, Hemp, presents a very uniform rate of produce during 

 the whole period, nevertheless the shifting crop, which however was not grown during 

 the years 1840 and 1841, presents a much larger produce than the permanent one, 

 as will be seen by the following Table. 



