( i874 ) 
«broad Vv'uh a brisk Wind, and fome of em confequcnily 
niay fall upon old Rotten Trees, and from thence re- 
ceive their Nourifliment and Increafc. 
i mennon d before, how the Seed Vcllels upon the 
Leaves of Fern, opened themfelves (whilft 1 wasobferving 
them) in order to (bed their Seed. 
For my further fatisfadion in this matter, I took a 
Fern Leaf, in which the Seed VeOels being quite ripe, 
were for the moft part open, and had difcharged their 
Seed, and pitt it into boyling hot Watery in this ex- 
peftation, that the hot Water infinuating itfelf immedi- 
ately into the Screw-like parts, as they are reprefented 
in Fig* 2. between H and O, would fo extend or fwell 
out thofe parts, that the Seed Velfels would refume the 
fame figure or appearance as when they were full of Seed 5 
and this Experiment I repeated feveral times, and al- 
ways obferved that almoft all the Seed Veflels (hut up 
themfelves, juft after the fame manner as they were be- 
fore they difcharged their Seed 3 and when 1 fpread 
thofe Seed Veflels abroad, and let them dry again, they 
were all of them as open as that which is reprefented by 
Fig. 2. 
II. Part 
