DR. DAUBENY ON THE ROTATION OF CROPS, ETC. 

 The following Table will show the curve of their growth : 



191 



Barley. 



Years. 



100 

 90 

 80 

 70 

 60 

 50 

 40 



30 

 20 

 10 



>lbs. 



The quantity of barley produced in a contiguous piece of ground recently manured, 

 was 39*4 lbs., being more than the average of the shifting crops, but about equal to the 

 produce obtained the first year from the permanent one. 



3. Brassica Rapa. 



Next in the series are Turnips, in which the difference between the average of the 

 shifting and permanent crop is very remarkable, namely as 176 to 100. 



Nevertheless it will be seen, that even the latter did not sink below a certain 

 amount when the seasons were tolerably favourable. 



