BoB O-'RAN Y; 235 
Ct A eee, 
Of Sprciric DisTINCTIONs. 
E have treated of Generic Differences 
in the five laft Chapters of the fe- 
cond Part of this Work; we come now to 
treat of the Sfecificones. For this a Foun- 
dation has been laid in the preceding Chap- 
ters of this third Part, by the Explanation 
of thofe Parts of the Vegetable, on which 
the Difference of the Species moft com- 
monly depends; but it is neceflary to ob- 
ferve, that the FruCtification which we treat- 
ed of in the firft Part, as preparatory to the 
DiftinGions of the Claffes and Genera, has 
its Influence likewife in many Cafes upon 
the Species, as will appear in the Courfe of 
this Chapter. 
Generic Differences we have fhewn to 
depend on the Form of the Fru@tification, 
and to be confined to that alone: Specific 
Differences take their Rife from any Cir- 
cumftance, wherein Plants of the fame Ge- 
nus are found to difagree; provided fuch 
Circumftance is conftant, and not liable to 
Alteration by Culture or other Accidents. 
Hence 
