But perhaps I might have sav'd a great part of my Labour. For I finde that _Helmont_ (an Author more considerable for his Experiments than many Learned men are pleas'd to think him) having had an Opportunity to prosecute an Experiment much of the same nature with those I have been now speaking of, for five Years together, obtain'd at the end of that time so notable a Quantity of Transmuted Water, that I should scarce Think it fit to have his Experiment, and Mine Mention'd together, were it not that the Length of Time Requisite to this may deterr the Curiosity of some, and exceed the leasure of Others; and partly, that so Paradoxical a Truth as that which these Experiments seem to hold forth, needs to be Confirm'd by more Witnesses then one, especially since the Extravagancies and Untruths to be met with in _Helmonts_ Treatise of the Magnetick Cure of Wounds, have made his Testimonies suspected in his other Writings, though as to some of the Unlikely matters of Fact he delivers in them, I might safely undertake to be his Compurgator. But that Experiment of his which I was mentioning to You, he sayes, was this. He took 200 pound of Earth dry'd in an Oven, and having put it into an Earthen Vessel and moisten'd it with Raine water he planted in it the Trunk of a Willow tree of five pound Weight; this he Water'd, as need required, with Rain or with Distill'd Water; and to keep the Neighbouring Earth from getting into the Vessell, he employ'd a plate of Iron tinn'd over and perforated with many holes. Five years being efflux'd, he took out the Tree and weighed it, and (with computing the leaves that fell during four Autumnes) he found it to weigh 169 pound, and about three Ounces. And Having again Dry'd the Earth it grew in, he found it want of its Former Weight of 200 Pound, about a couple only of Ounces; so that 164 pound of the Roots, Wood, and Bark, which Constituted the Tree, seem to have Sprung from the Water. And though it appears not that _Helmont_ had the Curiosity to make any _Analysis_ of this Plant, yet what I lately told You I did to One of the Vegetables I nourish'd with Water only, will I suppose keep You from Doubting that if he had Distill'd this Tree, it would have afforded him the like Distinct Substances as another Vegetable of the same kind. I need not Subjoyne that I had it also in my thoughts to try how Experiments to the same purpose with those I related to You would succeed in other Bodies then Vegetables, because importunate Avocations having hitherto hinder'd me from putting my Design in Practise, I can yet speak but Confecturally [Transcriber's Note: Conjecturally] of the Success: but the best is, that the Experiments already made and mention'd to you need not the Assistance of new Ones, to Verifie as much as my present task makes it concern me to prove by Experiments of this Nature.