Next, of the _Cucumber_-seed. That, as to its Colour, often appearing above ground in its Primitive white, from white it turns to yellow, and from yellow to green, the proper colour of a Leaf: That, as to its size, though at its first arise, the Lobes were little bigger than upon setting; yet afterwards as they chang’d their Colour, so their Dimensions also, growing to a three-four-five-fold amplitude above their primitive size: But whereas the Lobes of the Seed are in proportion, narrow, short and thick, how then come the dissimilar Leaves to be so exceeding broad, or long and thin? The Question answers it self: For the dissimilar Leaves, for very reason are so thin, because so very broad or long; as we see many things, how much they are extended in length or breadth, so much they lose in depth, or grow more thin; which is that which here befalls the now effoliated Lobes. For being once disimprisoned from their Coats, and the course of the Sap into them now more and more encreased, they must needs very considerably amplifie themselves; and from the manner wherein the _Seminal Root_ is branched in them, that amplification cannot be in thickness, but in length or breadth: In both which, in some dissimilar Leaves ’tis very remarkable; especially in length, as in those of _Lettice_, _Thorn-Apple_, and others; whose Seeds, although very small, yet the Lobes of those Seeds growing up into Dissimilar Leaves, are extended an Inch, and sometimes more, in length; though he that shall attempt to get a clear sight of the Lobes of _Thorn-Apple_, and some others, by Dissection, will find it no easy Task; yet is that which may be obtained. From all which, and the observation of other Seeds, I at last found, that the dissimilar Leaves of a young Plant, are nothing else but the Lobes or _main Body_ of its Seed: So that as the Lobes did at first feed and impregnate the _Radicle_ into a _perfect Root_; so the _Root_ being perfected, doth again feed, and by degrees amplifie each Lobe into a perfect Leaf. The Original of the dissimilar Leaves thus known, we understand, why some Plants have none; because the Seed either riseth not, as _Garden-Beans_, _Corn_, &c. Or upon rising, the Lobes are little alter’d, as _Lupines_, _Pease_, &c. Why, though the proper Leaves are often indented round; the dissimilar, like the Lobes, are even-edg’d. Why, though the proper Leaves are often hairy, yet these are ever smooth. Why some have more dissimilar Leaves than two, as _Cresses_, which have six, as the Ingenious Mr. _Sharrock_ also observes; the reason whereof is, because the _Main Body_ is not divided into two, but six, distinct Lobes, as I have often counted. Why _Radishes_ seem at first to have four, which yet after appear plainly two; because the Lobes of the Seed have both a little Indenture, and are both plaited, one over the other. To which we might add,