We say then, that the _Sap_ being in the _Root_ by Filtrations, Fermentations (and in what _Roots_ needful, perhaps by Circulation also) duly prepar’d; the prime part thereof passing through the intermediate Coarcture, in due moderation and purity is entertain’d at last into the _Trunk_. And the _Sap_ of the _Trunk_ being purer and more volatile, and so it self apt to ascend; the motion of the _Trunk_ likewise will be more noble, receiving a disposition and tendency to ascend therewith. And what by the _Sap_ the _Trunk_ is in part dispos’d to, by the respective position and quantity of its Parts it is effectually enabled. For whereas in the _Root_ the _Lignous Body_ being in proportion with the _Cortical_, but little, and all lying close within its Center; it must therefore needs be under its controul: on the contrary, being here comparatively of greater quantity, and also more dilated, and having divers of its Branches standing more abroad towards the Circumference, as both in the Leaves and Body of the young _Trunk_ and _Plume_, is seen; it will in its own tendency to ascend, reduce the _Cortical Body_ to a compliance with it. And the _Trunk_ thus standing from under the restraint of the Mould in the open Air, the disposition of its Parts originally different from that of the Parts in the Root will not only be continued, but improved: For by the force and pressure of the _Sap_ in its collateral Motion, the _Lignous Body_ will now more freely and farther be dilated. And this being dilated, the _Cortical Body_ also, must needs be inserted; and is therefore in proportion alwayes more or less smaller here in the _Trunk_, than in the _Root_. And as the _Cortical Body_ lessens, so the _Pith_ will be enlarged, and by the same proportion is here greater. And the _Pith_ being enlarged it self, its Pores (the _Lignous Body_, upon its dilatation, as it were tentering and stretching out all their sides) must needs likewise be enlarged with it, and accordingly are ever greater in the _Pith_ of the _Trunk_, than of the _Root_. And the dilatation of the _Lignous Body_ still continued, it follows, that whereas the _Pith_ descendent in the _Root_, is not only in proportion less and less, but also in the smaller extremities thereof, and sometimes higher altogether absent: Contrariwise, in the _Trunk_ it is not only continued to its top, but also there in proportion equally ample with what it is in any other inferiour part.