ixii PREFACE. 
had learned things by ether names, and 
could not eafily attain the new ones, muft 
have ftrong prejudices arife on this occafion. 
This cbjedion being perfonal i fhall not 
coniider it any farther, but readily allow 
that great indulgence is due to fuch 
people, and that their fate is to be pitied 
for coming into the world too foon to be 
enlightened farther on fubjeds, that per- 
haps had employed the greateft part of 
their life. But there are prejudices of 
another fort which i cannot omit to con- 
iider more fully on this occafion. 
In order to this it muft be premifed, 
that the ufe and intent of a claffica! fyftem 
in any part of natural hiftory, is not to 
range things according to their natural con- 
nedions in regard to their outward afpeds, 
or eflential qualities, or their medicinal or 
(Economical properties, but to range them 
in fuch a manner that upon a plant, mi- 
neral or animal being ihewn to a natu- 
ralift he may certainly, upon a due infpec- 
tion of the objed, give its true name 
according to fome fyftem. He who goes 
farther 
