PREFACE. 
nfefull to my Countrymen, in promoting the 
knowlege of Natural Hiftory, my principal object 
will be anfwered : Let it be treated with candor till 
fomething better appears •, and when that time 
comes the Writer will chearfully refign it to ob¬ 
livion, the common fate of antiquated Syftems. 
DOWNING, 
March 20, 1771 a 
Thomas Pennant 
