i62 AnESSA Y on the Procefs Chap. 6. 



and the Sap will run out at both ends, by 

 the fcice of the Heat^ which plainly de- 

 monftrates that the Sap is not gone down into 

 the Roots : Or, fuppofing that not plain e- 

 nough. Where, in the Roots, is to be found 

 a Receiver capable to contain the defcending 

 Sap, full enough 'tis probable already of the 

 Sap that belongs to themfelves ? 



But perhaps it may be ask'd how this Pro- 

 cefs is ftopt > To which I anfwer, By the 

 Coldnefs and Frigidity of the x\ir 5 for the 

 Sap in moft Trees being a thin Fluid, accord- 

 ing to the Courfc of Nature, by the leaft De- 

 clenfion of the Sun, is eafily affaird and ftopt : 

 And what makes Holly, Yew, and all other 

 Greens the contrary, is the ftrength of tho 

 Vifcous and other Glutinous and Gummy 

 Qualities of their Sap, by which they retain 

 their Leaves all the VVi^ter 5 and if a Httle 

 flieker'd, will make ^ fmaU appearance of 

 ihpoting, tho' not to much purpofe : Be- 

 fides, the Wood is more tough in its Nature 5 

 10 that the Leaves adhere the firmer, being 

 tied, as It were, by Strings to the Boughs: 

 W^iile the other kinds of Trees are more 

 fragile and brittle, the Sap thin, and confe- 

 quently. jthe_ Leaves deiidious upon the leaft 

 approach of Cold in Winter. 

 Cmcrnin^ To theotli^r^ i mean Circulation, as in 

 tbecinu^ Animals, I am as much to feek, in the parity 

 theZpi of ^^^k^. v^'hy it fi^^Quld be, as the Method 

 Trees, by whicii 'tis effeded. . Tis certain, the Na- 

 tural Meclianifm of the Body requires Exten- 

 ., ' * fion. 



