The Original of the _Calculary_ I seem to have neglected: But hereof we may here best say, that whereas all the other Parts are Essential and truly _Vital_, the _Calculary_ is not; but that the several Knots whereof it consists, are only so many meer Concretions or Precipitations out of the _Sap_; as in _Urines_, _Wines_, and other _Liquors_, we often see. And that this _Precipitation_ is made by the mixture and re-action of the Tinctures of the _Lignous_ and _Cortical Bodies_ upon each other: Even as all _Vegetable Nutrition_ or _Fixation_ of Parts is also made by the joynt efficiency of the two same Tinctures, as hath been said. Hence we find, that as the _Acetary_ hath no Branches of the _Lignous Body_, so neither hath it any Knots. Hence likewise it is, that we have so different and contrary a taste in the _Parenchyma_ beyond the _Calculary_, from that in the _Acetary_; for whereas this is soure, that, wherein the said _Precipitations_ are made, is sweet; being much alike effect, to what we find in mixing; of _Corals_, &c. with _Vinegar_ or other _acid Liquor_. In a _Plum_ (to which the _Cherry_, _Apricot_, _Peach_, _Walnut_, &c. ought to be referr’d) there are four distinct Parts, the _Pill_, the _Parenchyma_, _Branchery_ and _Stone_. The _Pill_ and _Parenchyma_ are, as to their Original, with those of an _Apple_ or _Pear_ both alike: As likewise the _Branchery_, but differently ramified. In _Plums_ (I suppose all) there are five main _Out-Branches_, which run along the Surface of the _Stone_ from the _Basis_ to the point thereof, four of them by the one Ridge, and one by the other opposite to it. In an _Apricot_ there is the same number, but the single Branch runs not upon the Surface, but through the Body of the _Stone_. There are likewise two or three smaller Branches, which run in like manner under the other Ridge for some space, and then advancing into the _Parenchyma_, therein disperse themselves: These latter sort in _Peaches_ are numerous throughout: But notwithstanding the different disposition of the Branches of the _Fruits_ aforesaid; yet is there one Branch dispos’d in one and the same manner in them all: The entrance hereof into the _Stone_ is at its _Basis_; from whence running through its Body, and still inclining or arching it self towards its Concave, is at last about its Cone thereinto emergent, where the Coats of the _Seed_ are appendent to it. Of the _Seed-Branch_ ’tis therefore observable that after its entrance into the _Fruit_, ’tis alwaies prolonged therein to a considerable length; as is seen not only in _Apples_, &c. where the _Seed_ stands a good distance from the _Stalk_; but in _Plums_ likewise, where it stands very near it; in that here the _Seed-Branch_, as is said, never strikes through the _Stone_ into the Coats of the _Seed_ directly, but about its Cone or remoter end. The _Stone_, though it seem a simple Body, yet it is compounded of different ones: The Inner Part thereof, as it is by