[ *59 1 



Now the degeneracy of the bed fpecies of apples 

 from the aforementioned caufc being allowed; and 

 as there is an acknowledged flow of the elementary 

 fluid to the blofibm, and to its fruit, and in refluent 

 fucceffion from both, what thefe receive or imbibe 

 may, by a repeated circulation, alter the habit of the 

 tree. This fpeculation might have been too much 

 refined, had not it been experienced, that a fcion in- 

 grafted hath not always produced that fpecifkk fruit 

 from whence it was prefumed to be taken -, and that 

 the mere infertion of the bud in inoculation hath, 

 without fenlible vegetation, altered the habit of the 

 plant in which it was inferted. 



The fir ft inftance has been attefted by fome prac- 

 tical obfervers; the latter is founded on an experi- 

 ment related by Bradley, under his " particular 

 proofs of the fap's circulation in plants;" where he 

 mentions the " inoculation of fome of the paflion- 

 tree, whofe leaves were fpotted with yellow, into one 

 of that fort of paffion-tree which bears the long 

 fruit. Now though the buds did not take, yet in a 

 fortnight's time the yellow fpots began to (hew 

 thcmfelves above the inoculation, and in a fhort 

 time after appeared on a (hoot which came out of 

 the ground from another part of the plant." 



Vol. IV. S Never- 



