Of the _Lignous_ body it is so apparent by its Pores, or rather by its Vessels, that we need no farther evidence. For to what end are Vessels but for the conveyance of Liquor? And is that also, which upon cutting the young Branch of a Sappy Tree or Plant, by an accurate and steady view may be observed. But when I say the Pores of the _Lignous Body_, I mean principally them of the younger shootings, both those which make the new Ring, and those which are mixed with the _Cortical Body_ in the _Barque_: that which ascendeth by the Pores of the older Wood, being probably, because in less quantity, more in form of a Vapour, than a Liquor. Yet that which drenching into the sides of its Pores, is with all thereunto sufficient Aliment; as we see _Orpine_, _Onions_, &c. only standing in a moyster Ayr will often grow; And being likewise in part supplied by the Insertions from the younger Shoots: But especially, because as it is but little, so it serveth only for the growth of the said _Older Wood_, and no more; whereas the more copious Aliment ascendent by the younger Shoots, subserves not only their own growth, but the generation of others; and is besides with that in the _Cortical Body_ the Fountain of _Perspirations_, which we know even in Animals are much more abundant than the _Nutritive parts_; and doubtless in a _Vegetable_ are still much more. But these Pores, although they are a free and open way to the ascending _Sap_; yet that meer Pores or Vessels should be able of themselves to advance the _Sap_ with that speed, strength & plenty, and to that height, as is necessary, cannot probably be supposed. It follows then, that herein we must grant the _Pith_ a joynt service. And why else in the smaller parts of the _Root_, where the _Pith_ is often wanting, are the Pores there greater? Why is the _Pith_ in all primitive growths the most _Sappy_ part, why hath it so great a stock of _Sap_, if not after due maturation within it self still to be disbursed into the Fibres of the _Lignous Body_? Why are the annual growths of all both Plants and Trees with great Piths, the quickest and the longest? But how are the Pores of the _Pith_ permeable? That they are so, both from their being capable of a repletion with _Sap_, and of being again wholly emptied of it, and again, instead thereof fill’d with Ayr, is as certain as that they are Pores. That they are permeable, by the breadth, appears from the dilatation of the _Lignous Body_, and from the production of Branches, as hath been, and shall hereafter be said. And how else is there a Communion betwixt this and the _Cortical Body_? That they are so also, by the length, is probable, because by the best _Microscope_ we cannot yet observ, that they are visibly more open by the breadth, than by the length. And withal are ranked by the length, as those of the Insertions by the breadth of the _Trunk_. But if you set a piece of dry _Elder-Pith_ in some tinged Liquor, why then doth it not penetrate the Pores, so as