I could heartily wish, that all the practical Physicians in _Europe_ would concur to giving a Sanction to this Doctrine by their Practice; for, besides the Testimonies of _Trigautius_ and _Rhodius_, I am certain from Experience, that the _Cha_ is the _Rhus Coriaria_, or a certain Species of it, whose Qualities and Marks are known from what has been already said. I do not, in the least, doubt, but the _Cha_ of the _Tartars_, or the _Thee_ of the _Chinese_, is our _Chamelæagnus_, or _Pliny_'s Herb _Rhus_; especially since _Clusius_, in _Auctar. Exoticor. Libror_. expresly asserts, that from the Cuts of some _Chinese_ Books, which _Pavius_ and _Joseph Scaliger_ received in a Present from some _East India_ Merchants, though coarsely engraved, he perceived that many _Chinese_ Plants are exactly similar to some of those produced in _Europe_. This Circumstance renders it highly probable, that _China_ which borders upon _Tartary_, produces our _Chamelæagnus_. I am heartily sorry, however, that I have not had an Opportunity of conversing with _Martinius_ on this Subject, since, according to _Galen_, in _Lib. de Compos. Med. Cap. 3._ reading an Author's Works, is not so satisfactory, as a personal Conversation with him. However, as I have only followed Reason, and the Course of my own Thoughts, I hope I shall have no Cause to repent my Labour; since, according to _Cornelius Tacitus_, in _Annal. 15._ many Things are obtained by Experiments and Efforts, which, to the lazy and sluggish Part of Mankind, seemed highly difficult, if not impossible. Thus the _Romans_, by Bravery and Activity, raised their originally petty State, to a most extensive and powerful Empire. _Columbus_ discovered _America_ by Reading and making Efforts for that Purpose. _Copernicus_, and _Ticho Brahe_, by their extensive Acquaintance with Mathematics, discovered and demonstrated many important Things, unknown to our Forefathers. The illustrious _Hoffman_, in _Paralcip. Officinal_, when giving a noble Scope to his Imagination, in the Investigation of Mineral Waters, tells us, that the advancing probable Things, is an Advantage to the Cause of Truth, and was always looked upon as such by _Plato_, _Aristotle_, _Galen_, and all other Philosophers. Notwithstanding the incomparable Learning and Industry of _Martinius_, I cannot comprehend some Things in his Description of _Tea_; for I cannot conceive why he asserts, that the _Rhus Coriaria_ is not wild, but cultivated among the _Chinese_; since _Matthiolus_, _Bauhine_, and _Hoffman_, do not, with _Galen_, make a Distinction between the _Rhus Coriaria_, and _Culinaria_, which, by _Trigautius_ and _Rhodius_, is called the _Cha_, or _Thee_; but if _Martinius_ had mentioned the _Myrtle_, I should have conjectured, that he followed other Botanists, who exclude the _Myrtus Sylvestris Dioscoridis_, in the Shops known by the Name _Ruscus_, or _Bruscus_, from the Species of true _Myrtles_. Thus _Marcellus Virgilius_, in _Comment. in Dioscorid. Lib. 1. Cap. 132._ makes a great Difference between them in the following Passage: "The _Myrtus Sativa_ of _Pliny_, which I describe in this Chapter, is not like other Plants, sown in continued Tracts of Ground; and though it thrives better in Gardens, than in uncultivated Soils, this is not the only Difference between it and the _Myrtus Agrestis_, which is a Plant of an intirely different Kind, which the _Greeks_ call _Oxymyrsene_, and the _Latins_, _Ruscus_; for, upon Comparison, the _Myrtle_ is milder than the _Ruscus_, whose cuspidated Leaves are pricking and sharp. It is, however, certain, that the _Ruscus_ was, by some of the Antients, called _Myrtus Sylvestris_." I do not remember, that any Botanist has brought such a Charge against our _Chamelæagnus_, since it is universally enumerated among the Species of true _Myrtle_, though of the wild Kind. The Reason why _Martinius_ calls the _Chamelæagnus_ a cultivated Plant, as I suppose, is, because the _Chinese_, seeing us so fond of _Tea_, have begun to cultivate it, in order to draw the Profits arising from it, just as the _Europeans_ do the Vine, for the Sake of the Grapes, the _Persians_ the _Mulberry-Tree_, for the Silk; the Inhabitants of _Narbon_ and _Provence_, the _Ilex Coceigera_, for the Sake of the _Cochineal_; or the _Americans_ the _Tobacco_, on account of the large Quantities of it imported into _Europe_.