the Natural Hifflory Fart VI* 



all, and anfwer every End of Nature, 

 but fuch a gradual Increafe and De- 

 creafe of Heat as now there is. I muft 

 not defcend to the Animal World, 

 where the Inconveniences would be 

 as many and as great as in the Vege- 

 table : and fiich a Situation of the Sun 

 and Earth as that which the Theorifi 

 fuppofes, is fo far from being prefer- 

 able to this which at prefent obtains, 

 that this hath infinitely the Advantage 

 of it in all refpefts. 



Be that how it will, for I have no 

 need to infift upon it, but may take 

 the thing in his way , and fijppofe 

 that fuch a Temperature would have 

 all the happy Effefl:s that he expeds 

 from it ; yet there is one very confide- 

 rable Thammmn of the Vegetable 

 Remains of that Earth, which affords 

 us a iiire and plain Indication that 

 there was not then any fuch Tem- 

 perature. From thefe it clearly appears 

 that there was the lame Order and Suc- 

 ceffion of Things upon the Face of 

 the Earth that there is at this time. 

 Now this Succeffion being, as we 

 have leen, caufed meerly by the Va- 

 riation of the Sun's Heat, it muft needs 



follow 



