The Natural Hiftory Fart V t 



their Tur^s over again as formerly. 

 Yea the more tender and frigitive 

 Parts, the Leaves, and the like, of ma- 

 ny of the more fturdy and vigorous 

 Vegetables, Shrubs, and Trees, fuffer 

 the lame Fate, and fall off for want of 

 the Supply from beneath ; thole only 

 which are more tenacious, confiftenr^ 

 and hardy, enduring the Brunt, and 

 making a fliift to fubfift for the time 

 without fuch Recruit and Reparation- 

 'Tis therefore, we lee, moft apparent 

 that this Succeffion oiThwgs upon the 

 Face of the Earth, is purely the Re- 

 fult and Effe£l of the Viciffitude of 

 Seaibns : and is as conftant and certain 

 as is the Caufe of that Viciflitude, the 

 Sun's Declination : fb certain , that 

 were a Man kept for fbme time blind- 

 fold, in fuch manner that he could 

 have no Notice how the Year pals'd 

 on, and were at length turned forth in- 

 to the next Field or Garden, he would 

 not need any other Almanack to in- 

 form him what Seafon of the Year it 

 then was. 



But if inftead of this Varution of 

 Heat, we fuppofe that there was an 

 Eqmlity or conftant Temperature of 



it 



