3. That Viscus Arboreus or Misseltoe is bred upon Trees, from seeds which Birds, especially Thrushes and Ring-doves let fall thereon, was the Creed of the Ancients, and is still believed among us, is the account of its production, set down by _Pliny_, delivered by _Virgil_, and subscribed by many more. If so, some reason must be assigned, why it groweth onely upon certain Trees, and not upon many whereon these Birds do light. For as Exotick observers deliver, it groweth upon Almond-trees, Chesnut, Apples, Oaks, and Pine-trees. As we observe in _England_ very commonly upon Apple, Crabs, and White-thorn; sometimes upon Sallow, Hazel, and Oak: rarely upon Ash, Lime-tree, and Maple; never, that I could observe, upon Holly, Elm, and many more. Why it groweth not in all Countries and places where these Birds are found; for so _Brassavolus_ affirmeth, it is not to be found in the Territory of _Ferrara_, and was fain to supply himself from other parts of _Italy_. Why if it ariseth from a seed, if sown it will not grow again, as _Pliny_ affirmeth, and as by setting the Berries thereof, we have in vain attempted its production; why if it cometh from seed that falleth upon the tree, it groweth often downwards, and puts forth under the bough, where seed can neither fall nor yet remain. Hereof beside some others, the Lord _Verulam_ hath taken notice. And they surely speak probably who make it an arboreous excrescence, or rather superplant, bred of a viscous and superfluous sap which the tree it self cannot assimilate. And therefore sprouteth not forth in boughs and surcles of the same shape, and similary unto the Tree that beareth it; but in a different form, and secondary unto its specified intention, wherein once failing, another form succeedeth: and in the first place that of Misseltoe, in Plants and Trees disposed to its production. And therefore also where ever it groweth, it is of constant shape, and maintains a regular figure; like other supercrescences, and such as living upon the stock of others, are termed parasitical Plants, as Polypody, Moss, the smaller Capillaries, and many more: So that several regions produce several Misseltoes; _India_ one, _America_ another, according to the law and rule of their degenerations.