Page:The Art of Distillation, 1651.djvu/39

Book.1 15. Doe not expect to extract the eence of any vegetable unlee by making ue of the feces, left after ditillation: for if you take thoe feces, as for example of a nettle, and make a decoction thereof, and train it and et it in the frot, it will be congealed and in it will appear a thouand leaves of nettles with their prickles, which when the decoction is again reolved by heat, vanih away, which hewes that the eence of the vegetables lies in the alt thereof. 16. In all your operations, diligently oberve the procees which you read, and vary not a little from them, for ometimes a mall mitake or neglect poiles the whole operation, and frutrate your expectation. 17. Try not at firt experiments of great cot or great difficulty, for it will be a great dicouragement to thee, and thou wilt be very apt to mitake. 18. If any one would enter upon the practices of Chymitry, let him apply himelf to ome expert artit for to be intructed in the manuall operation of things, for by this means he will learn more in 2. moneths, then he can by his practie and tudy in 7. years, as alo avoid much paines and cot, and redeem much time which ele of neceity he will looe. 19. Enter not upon any operation, unlese it be conitent with the poibility of nature, which therefore thou mut endeavor as much as poibly may be, to undertand well. 20. Doe not interpret all things thou readet according to the literal ene, for philoophers when they wrote anything too excellent for the vulgar to know, expreed it enigmatically, that the onnes of Art only might undertand it. 21. In all thy operations propoe a good end to thy elfe, as not to ue any excellent experiment that thon halt dicover, to any ill end, but for the publick good. 22. It