Of Vegetation . 357 
If I may be allowed to indulge conje&ure 
in a cafe in which the moft diligent in- 
quirers are as yet, after all their laudable 
refearches, advanced but little farther than 
mere conje&ure, I would propofe it to their 
confideration, whether from the manifeft 
proof we have that fulphur ftrongiy attrafts 
air, a hint may not be taken, to confider 
whether this may not be the primary ufe 
of the Farina fcecundans , to attract and unite 
with it felf elaftick or other refined aftive 
particles. That this Farina abounds with 
fulphur, and that a very refined fort, is pro- 
bable from the fubtle oil which chymifts ob- 
tain from faffrom And if this be the ufe of 
it, was itpoffible that it could be more apt- 
ly placed for thepurpofe than on very move- 
able Apices fixt on the (lender points of the 
Stamina , whereby it might eafiiy with the 
leaf: breath of wind be difperfed in the air, 
thereby furrounding the plant, as it were, 
with an Atmofphere of fublimed fulphure- 
ous pounce > (for many trees and plants a- 
bound with it) which uniting with the air 
particles, they, or a very fublimed fpirlt from 
them, may perhaps be infpired or imbibed at 
feveral parts of the plant, and efpecially at 
the Tiftillitm 7 and be thence conveyed to 
A a 3 the 
