xxiv PREFACE. 
add, that , after all that has been 
done , the Hi [lory of the Virtues of 
Plants is Jlill incompleat : Who dare 
fay , that all the V irtues of any Plants 
are yet dif covered, and that they have 
no more , or other , befides what we 
know V**- Of fame Thoufandy of British 
Plants, 
above 
lefs Tribes of Marine Plants , the little 
that we know of them bears no Pro- 
portion to what we know not : Time 
and Chance only , not Philofophy, can 
make further Difcoveries ; but Phi- 
lofophy, not Chance , muf direSl us to 
a more extenfve, beneficial, fife, and 
regular Ufe of them , when difiovered \ 
But, tho we are Strangers to many, 
and perhaps the befi Virtues of Platits, 
yet let us always be cautious, that our 
Credulity may not impofe upon usfi&i- 
tious, infiead of real Ufes. 
I would here advertife the Reader, 
that, in fiveral Places , for his Eafi, 
I have thrown a Heap of the mofi 
approved 
