By which observation of his, it seems manifest, that their being all cover’d with sweat who gather’d and cut this root of the black _Chameleon_ Thistle, was the great reason why they suffer’d that inconvenience, for it seems the like circumstance had not been before that noted, nor do I find any mention of such a property belonging to this Vegetable in any of the Herbals I have at present by me. I could give very many Observations which I have made of this kind, whereby I have found that the best way to get a body to be insinuated into the substance or insensible pores of another, is first, to find a fluid _vehicle_ that has some congruity, both to the body to be insinuated, and to the body into whose pores you would have the other convey’d. And in this Principle lies the great mystery of staining several sorts of bodies, as Marble, Woods, Bones, &c. and of Dying Silks, Cloaths, Wools, Feathers, &c. But these being digressions, I shall proceed to: * * * * * Observ. XXVI. _Of _Cowage_, and the itching operation of some bodies._ There is a certain Down of a Plant, brought from the _East-Indies_, call’d commonly, though very improperly, _Cow-itch_, the reason of which mistake is manifest enough from the description of it, which Mr. _Parkinson_ sets down in his _Herbal_, Tribe XI. Chap. 2. _Phasiolus siliqua hirsuta; The hairy Kidney-bean, called in _Zurratte_ where it grows, Couhage: We have had_ (says he) _another of this kind brought us out of the _East-Indies_, which being planted was in shew like the former, but came not to perfection, the unkindly season not suffering it to shew the flower; but of the Cods that were brought, some were smaller, shorter, and rounder then the Garden kind; others much longer, and many growing together, as it were in clusters, and cover’d all over with a brown short hairiness, so fine, that if any of it be rubb’d, or fall on the back of ones hand, or other tender parts of the skin, it will cause a kind of itching, but not strong, nor long induring, but passing quickly away, without either danger or harm; the Beans were smaller then ordinary, and of a black shining colour._