33S CHAPTER 2^. 
plains himfelf farther, and advances, thai? 
this foecundating power was not effeded by 
the adlual admiffion of the farina into the 
feed-veffel, but by means of fubtle and 
" vivific effluvia/' 
Mr. Ray admitted the opinion of Dr. 
Grew, but, at firfl:, with all that caution 
which becomes a philofopher y as appears ir> 
his*^ HiJiGriaPIantarumy* vol, i. "p, 18. Nos 
ut verifiniilem tantum admkthfius. He affents 
to it with lefs refer ve in his *^ Syttopjis Stir- 
fiumBritannicarumy' edit. i. 1690, p. 28 ; 
and in the preface to his Sylloge Stlrpium 
Europcearumy' publifhed in 1694, we find 
him producing his reafons for the truth of it, 
and yielding his full approbation to it. 
In 1695, Rudolph Jacob Camerarius, 
profeflbr of botany and phyfic at Tubingen^ 
in his Epiftola de Sexu Plant arum ap- 
]f)ears among the early advocates for this 
analogy , and, being convinced by the argu- 
ments of Grew and Ray, feems to have 
been the firft who gave ftabiiity to the 
whole by experiments. Thefe he^ made 
on Maize y the Mulberry y the RicinuSy and 
th& Mercurialis the three firft of which he 
deprived 
1 
