( 49 0 ) * 
other part of the Tree; and by what I have obferv’d, 
feem to contain a more finifh’d Juice than the reft, and 
may well enough be ftiled the Medulla. 
We may note, that when the fourth or innermoft 
BarkC, has once compleated its Sap- Veflels, and is firm- 
ly join'd to the Wooden Part, then the third Bark O takes 
its place for the (iicceeding Year ; and fo the reft, ex- 
cept that the firft mark’d M, fplits and divides its fclf, 
to fupply the place of the fecond. as I fhall demonftrate 
hereafter. 
Before I conclude, I fhall beg leave to recommend the 
following Enquiry to the Curious, viz. 
If thefeveral Barks, having different Texture of Parts, 
admit into each feparate and different Juices from the 
reft: Whether thofe Juices may not be of very Diffe- 
rent Vertues > the firft more Aftrlngcnt than the others, 
the fecond perhaps Emetick ; and the third Catkartick . 
This feems to be worth Enquiry. 
Vf. Some Microfcopical Obferyations , and Curious 
(Remarks on the Vegetation, and exceeding quicks 
t Propagation of Moldinefs, on the Sub fiance of a 
Melon . Communicated by the fame . 
I Had lately a large Melon-Fruit, which I fplit length- 
ways thro’ the Middle, in order to obferveche Vef 
fels which compofed the Membrane or Tunick of each 
Ovary 5 but my affairs at that time not permitting me to 
-continue the Work I had began, I lay’d by the one half 
of the Melon, to be examin'd when I might have more 
Leifure. 
M 
2 
