I. 



- roots 



kt 



b 



Or, 



^nt it 



It 



J I pre- 

 nkulfe, 



- to be 



a little 

 )rori 



oent 



(lem fet 

 cuttlncp 



.e extre- 



to be 



^ a large 

 n a plant 



;r 



fhould 

 form it- 

 sffels but 



e 



the re- 



;xtremity 



1 



deduce 



d 



ion 



to 



Idbu 



the 



aded 



)iie 



>\ 



'h'lch 



fortn^ 



■»^ 









)ve 



the 



in- 



eare 



a 01^ 



a 



iho^'' 



Sect. V. 2. 



AND VEINS. 



6i 



flioot, v^bich 



of the o-round from another part of the plant 



Bradley on Gardening, Vol. II. p. 129. 



And Mr. Lawrence obferves, that the yellow flriped jaffamlne h 

 afforded a demonflration of the circulation of the juices in a tree : ' 



r 



ted in Auguft the 



branches of pla 



buds 

 dafl 



f ftriped jafTamine 



he 

 the 



that he has feveral times expe 



ced, that if the bud lives but two or three months, it will com 



municate its virtue or difeafe to the whole circumfluent fap, and th 



Art of Garde 



p. 66 



Thefe 



they are related from refpedable 



tree will become entirely ftriped. 

 are both of them important fads, : 



authorities. 



And I think I have myfelf obferved in two pear-trees about twenty 



years old, whofe branches were much injured by canker, that on in- 

 grafting hardier pear-fcions on their fummits, they became healthier 

 trees, which can only be explained from a better fanguification pro- 

 duced in the leaves of the new buds. 



It has alfo been obferved by an ingenious lady, that though fruit- 

 trees ingrafted on various kinds of flocks are fuppofed to bear fimilar 

 fruit,ye't that this is not accurately fo ; as on fome flocks fhe has known 

 the in -rafted fcions of apple-trees to fufFer confiderable change for the 

 worfe^compared with the fruit of the parent-tree; whereas thofe fcions, 



can be made to grow by ftriking roots into the earth, fhe be 



which 



fufFer no deter 



If this really 



it fhould be 



very flight d 



the fruit is formed by the adion of fee 



tion and depends on the glands of the part more than on any flight 

 change of the vegetable blood, from which the fecretion is fejedled - 



produced 



Neverthelefs if th 



fa6t be afcertained 



firms th 



truth of the exiflence of a vegetable circulat 



2. 



The circulation of th 



d in their trunks and 



ble juices in the leaves of plants, 

 performed without a heart, and is 



In fifh the blood, after hav- 



ry fimilar to that in the aorta of fifh. 



g paffed through their gills, does not return to the hea 



from 

 the 



I 



