( 208 ) 
but 2558 grains of tht Fluid : and fhaf In B, which 
weigh'd only 28 -J:, took up but 3004 gr, whereas that 
in H, which weigh'd 127 grains, fpent 141 90 gr. of 
the Liquid Mafs. 
The Water feems to afcend up the Vejfeh of Plants 
in much the fame manner as up a Filtre : and 'tis no great 
wonder that a larger Filtre (hould draw off more Water 
than a ieffer : or that a Flant that has more and larger 
VeJJels fhould take up a greater fliare of the Fluids in 
which 'tis fet, than one that has fewer and fmaller ones 
can. Nor do I Note this as a thing very confiderable 
in it felf, but chiefly in regard to what I am about to 
offer beneath : And that it may be feen that, in my other 
Collations of Things, I made due Allowance for this Dif- 
ference. 
2. The much great ejl part of the Fluid Mafs that is thus 
drawn off and conveyed into the Plants, does not fettle or 
abide there : but paffes through the Pores of them, and ex- 
hales up into the Atmofphere. That the Water in thefe 
Experiments, afcended only through the Veffels of the 
Plants is certain. The Glaffes F and G, that had no 
Plants in them, tho' difpofed of in like manner as the 
reji, remained, at the End of the Experiment, as at firft : 
and none of the Water was gone off. And that the great- 
eft part of it flies off from the Plant into the Atmofphere^ 
is as certain. The leaft proportion of the Water expend- 
ed was to iht Augment of the Plant, as 46 or 50 to i. 
And in fome the weight of the Water drawn off was 
100, 200, nay, in one above 700 times as much as the 
Plant had received of Addition, 
This fo continual an Emijjion and Detachment of Wa^ 
ter, in fo great Plenty from the Parts of Plants, affords 
us a manifeft reafon why Countries that abound with 
Trees and the larger Vegetables efpecially, £hould be ( 
very j 
I: 
i; 
