xxx PREFACE. 
ration ; and thefe in all Nations t 
Kingdoms , and Countries., in all Sea- 
sons of the Tear , ConJIitutions of the 
Air , Conditions or Kinds of Food, by 
Land or Sea, in City and Country : 
There had been no Difference between 
Infants , Youth, Manhood, and old 
Age ; none between Fxercife and Reff 
Male and Female, Repletion and 
Inanition, &c. But fuppofe God had 
( which is not impoffible with him) 
created only one, or a few Plants , 
to have fully anfwerd all the Ends 
both of Food and Phyfck to all Man- 
kind ; yet. What mujl have become 
of the refl of the Animal Creation , 
both for Nutrition and Medicine, if 
a fuffcient Supply had not been pro- 
J vided for them f They fhould either 
not have been created, or made to flarve, 
and be immediately extirpated ; efpe- 
cially Inf Els, and, to the naked Eye , 
invifible corporeal Beings. I may 
add. What Room had there been for 
human. 
