Chap. XV. Of Change of Individuals. 3 29 



or upper Stratum, wherein the Plough is exer- 

 cifed. 



This beneficial Change of Individuals feems rather 

 to be from the forementioned Caufes, than from 

 Change of Food ; and thefe Caufes fhew their Ef- 

 ficacy, chiefly in the Generation or Fcetation of 

 thofe Seeds ; as Flax-feed brought from Holland, 

 and fown here, will bring as fine Flax as there; but 

 the very next Generation of it coarfer, and fo dege- 

 nerating gradually, after Two or Three Defcents, 

 becomes no better than the common ordinary Sort; 

 yet its Food is the fame, when the Flax is fine, as 

 when 'ti* coarfe. 



And fo it is, when Individuals of Wheat arc 

 changed; So Silk-worms, hatched and bred in France, 

 of Eggs or Seed brought from Itafyi will make as 

 fine Silk as the Italian ; but the Eggs of thefe laid 

 in France and their IfTue, will make no better Silk 

 than the French; though their Food be from Leaves 

 of the fame Mulberry-trees, when they make fine Silk 

 and coarfe : Therefore 'tis from the Climate, where 

 the Eggs are impregnated, not where they have their 

 Incubation or Food, when hatched, and fed to their 

 Lives End, that this Difference happens. 



Common Barley, fown once in the burning Sand 

 at Patney in JViltJbire, will, for many Years after, if 

 fown on indifferent warm Ground, be ripe Two or 

 Three Weeks fooner than any other (b) 9 which has 



never 



(^ ) Earley is far from being improved by becoming rath-ripe;. 

 for it lofes more good Qualities than it gets by being fown at Fat- 

 nty : Tis fo tender, that if it be fown early, the Froil is apt to 

 kill it ; or if it be fown late in May, on the fame Day, and in 

 the fame Soil, with the fame Sort of Barley that is not rath-ripe, 

 it will be much thinner bodied than the late ripe ; and befides, 

 if it happens to have any Check by Cold or Drought, it never 

 recovers it as the other doth, at what time foever it is fown. It 

 is now, I am informed, gone out of Fafhion, and very few Far- 

 mas have fown it of late Years. I know a little Parifa, that. 



J 



