appendix. 265 
Observation VII. 
O ocher Arguments which arc alledg- 
ed againfl: the Circulation of the Sap 
in Experiment XLVI. Vbl I. this may be ad- 
ded, viz. Count MarJilU a curious Enquirer 
obferves in his Hiftoire delaMere^ p. 57. 107. 
173, that Sea Plants which are all rooclefs, 
except the Alga^ have no longitudinal capilla- 
ry Sap Veflels, thro* which rooted Plants draw 
Nourifliment to every part from the Earth. 
But the whole Subftance of thefe Sea Plants 
is compofed of Veficles, -w^hich Veficles re- 
ceive their Nourifliment immediately from 
the furrounding Water, and confequently 
there being no longitudinal Veflfcls to convey 
Sap from one end of the Plants to the other, 
we may reafonably conclude that there can be 
no Circulation of the Sap ; whence we fee 
that Circulation is not neccCTary in order to 
Vegetation. 
Observation VIII. 
I. ’'O the Inflance of the imbibing Power 
of grafted Stocks, mentioned in Ex- 
periment 
