T'he Conchjion. 365 



January, or February, tho* they make but a 

 ilow progrefs in their growth upwards, du- 

 ring the cold feafon, yet their roots, as alfo 

 thofe of winter Corn, do in the mean time 

 fhoot well into the warmer earth, fo as to be 

 able to afford plenty of nourifhment when 

 the feafon advances, and there is a greater 

 demand of it both for nutrition and perfpira- 

 tion. But when Peas are fown in June, in. 

 order for a crop in September, they rarely 

 thrive well, unlefs in a cool moift fummer, 

 by reafon of the too great perfpiration caufed 

 by the fummer's heat, which dries and har- 

 dens their fibres before they are full grown. 



Tho' we have from thefe Experiments, 

 and from common obfervation, many proofs 

 of the great expanfive force, with which the 

 fibrous roots of plants fhoot, yet the lefs re- 

 finance thefe tender fhoots meet with, the 

 greater progrefs they will certainly make in 

 equal times : And therefore one confiderable 

 ufe of fallowing and trenching ground, and 

 of mixing therewith feveral forts of compofr, 

 as Chalk, Lime, Marie, Mould, &c. is not 

 only thereby to repleniih it with rich manure, 

 but alio to loofen and mellow the foil, not 

 only that the air may the more eafily pene- 

 trate to the roots, but alfo that the roots may 



the 



