196 DR. DAUBENY ON THE ROTATION OF CROPS, ETC. 



The following are the results obtained : — 



Year. 



Permanent crop of ten years' standing. 

 Crop dried. 



Permanent crop of five years, fresh seed, 

 Crop dried. 



Shifting crop. Crop dried. 



1835. 

 1836. 



1837. 



1838. 



1839. 



1840. 



1841. 



1842. 



1843. 



1844. 



No. 19. 

 12-9 



167 



12-0 



20-0 



13*75 



16-5 



9-0 



8-4 



11-7 



5-2 



Average often years. . . 12*6 

 Average of first five years 15*0 

 Average of last five years 10*4 

 Maximum in one year. . 20*0 

 Minimum in one year. . 5*0 



Nos. 13 and 14. 



After Valeriana Phu. 



43-5 



41-0 



34-0 



31-0 



11-5 



Average of five years . . . 32-5 



Maximum in one year. . 43*5 

 Minimum in one year . . 1 1 "5 



15-8 



After Polygonum fagopyrum. 



17*0 



After Solanum tuberosum. 

 19-8 



After Solanum tuberosum. 

 25-5 



After Valeriana Phu. 

 21-75 



After Polygonumfagopyrum. 

 21-5 



After Vicia sativa. 

 25-0 



After Brassica Papa. 

 34-0 



After Vicia Faba. 

 29-6 



After Solanum tuberosum. 



17-8 



Average of ten years . . . 22*7 

 Average of first five years 19*9 

 Average of last five years 25*5 

 Maximum in one year. . 34*0 

 Minimum in one year . . 15*8 



The following- fliagrani will show the curve of their growth : — 



Flax. 



Years. 



, — -A. 



I 2 3 4 5 6 7 



/j •%'* :■ ■> 



Permanent five years 

 40 



20 



Shifting 



Permanent ten years. 

 10 



