( 4^3 ) 
mnrpiriag and precipitating wbac isufeiefs^ in Plants the 
Juyce, conveyed through the ligneous pipes, is carried to the 
old Juyceharbour'd in the faid Bubbles , and is there and in the 
Pith fermented and further prepared, and kept to furnifli mat- 
ter for future Buds and Leaves. 
The Aif-^ftpes ) called alfo by him Sftrd fibres ^ are, in his 
opinion, a kind of SilvePcolourd p'ate, wreathed fpirally, 
and fo conftituting an open hollow pipe, of a fcaly texture, 
made up of little pipes and bladders, very like the Lungs of 
Infefts, admitting contraftion and dilatation. Whence he con- 
cludes the great neceflity and ufe of Air and Refpiration in all 
thofe Creatures that have even but the leaft degree of life: 
Which Air, he faith, is in Plants taken-in chiefly by the Rooc 
out of the Earth, there being no fuch confpicuous Air- pipes 
in the Bark or Leaves , whereas the Roots are exceedingly 
ftored with them. This Air, contained in thefe pipes, and 
fubjeftto comprefTion and rarefaftion, preffesby its fwelling 
upon the contiguous Woody fibres and their adhering bubbles^ 
and fo fqueezes out their Juyce into the neighbouring parts ; 
which being relaxed and emptied,^, they admit and take ia frefii 
liquor. 
Such Plants, asinfteadof ^/^^r liquor contain in their fibrous 
pipes a cc/our d ]uycG^ hav*ea peculiar velTel, as in the Ehlui 
QDafte-mrt) fig* 30, and inallLaftiferous andRefinous plants, 
fig, 31» And each Plant feems to our Author to have a pecu- 
liar vefle! to contain and prepare the laft and fpecifick nourift- 
ment for that plant ; fuch as are thofe, that hold the Turpen- 
tine and Rozin in fome Trees 5 there being as many feveral 
forts of Juvces as there arej^<fwj of Plants 3 and therefore pe- 
culiar Vefiels, preparing the laft and proper juyce for each re- 
fpeftive Plant. 
The Sfems of Trees and their Branches wcreafe by the ex* 
ternal addition of a new Coat of Fibres and Air-pipes, grow- 
ing about them every year, and thereby giving them a new Ring 
of wood. 
As CO the of Plants, they are to our Author nothing 
but the produ6ions of new OfF-fprings upon a new implication 
of Fibres and Air-pipes, for thefhooting out of new Leaves, 
and young Sprouts or Buds. 
G g g 2 A 
