ON ROOT CULTIVATION. 49 



we would now close this chapter, as details of all the 

 insect pests would occupy more space than we can 

 here allot to the suhject; but to those who would 

 inquire further upon this fertile theme, we would 

 advise the perusal of "Farm Insects," by J. Curtis, 

 Esq., F.L.S., &c. 



GENERAL CONCLUSIONS. 



To render our subject as complete as possible, we 

 direct attention to the following practical conclu- 

 sions, to which our whole argument upon the science 

 of root-growing points : — 



First. — Cultivated roots are improved wild ones, only 

 to be obtained by gardening on the small, or 

 farming on the large scale; this gardening or 

 farming being carried on by certain operations 

 at certain seasons which we have comprehended 

 under the term of cultivation processes. 



Second.— The difference in sort of roots is caused 

 either by cross-breeding as the result of accident 

 or design, or of the education of some particular 

 propensity which has been acted upon by the 

 intelligent seed-grower. 



Third. — The maintenance of sorts in purity depends 

 upon careful selection of the right, variety for 

 the seeding examples. 



Fourth. — The preservation of a good outline or shape 

 of root can only be maintained by selecting those 



E 



