For first it is to be taken notice of, that the most subtile part onely of the Spirit of Urine, and not the more gross part, is fit for the coagulation of the Spirit of Wine: If therefore in the preparation of the same, the most subtile part shall be lost, through the negligence or ignorance of the operator, it can in no wise be brought to pass, that the more gross and dreggy part should cause that coagulation.
But that most subtile Spirit doth not onely vanish away in distillation through an insufficiency of the Luteing not being good, but also a great part of the same is lost before distilling, to wit, when the Urine being successively gathered, is constrained to stand and wait too long, so that the Spirit by little and little exhaleth and departs into the Air, especially when it is gathered together in the Summer or Winter time, for that fire not being patient of any extreme, is expelled by a little heat or cold, and therefore the fittest times for collecting the same are the Months called March and May, or September and October, in which Months the Air is temperate, neither too hot, nor too cold, those Months therefore are the fittest for collecting and extracting of an Animal fire out of it.
Furthermore, Calx-vive or unslaked Lime is to be added to the Urine (when putrified) and distilled, that the insipid water may be so much the more easily or readily separated from that volatile fire, the which is not done if it be distilled per se.
I would not pass by these few things in silence for the sake of the Reader, and of him that is studious of good Medicines: But after what manner Metals may be amended by this Animal fire is not here shewn, but God willing shall by and by in the following Chapters. But we put an end to the preparation and con-centration of Animal and Vegetable fires, with these sayings, whose admirable virtues and faculties in medicines, Alchimy and other profitable Arts, shall here be manifested in order, as much as time will permit.
Look I pray you on the Elementary Sun, as also on the fire of woods, and the virtues of light, and the virtue of both, the which all creatures, and especially mankind it self, is constrained to make use of for their own safety; could even the least grass bewray itself? or any small worm be bred and live without the Sun? could any workmanship or artifice be exercised without the help of common fire? the which, if it were not, we should be constrained to eat unboyled Herbs, and raw Flesh like wild Beasts: yea, the whole conversation and negotiation or traffique among men should be wholly taken away, if earthly fire and light should be wanting unto us.
If there were some one man onely in Some whole City or Province, or in a whole Kingdom, who alone could make others partakers of fire and light, would there not be made the greatest concourse of all men unto him? but because it is known to every one, and everyone hath known by an easy manner, how to strike it out of flints, it is had in no esteem, for it is customary not to esteem those things which are made common, although they are pretious. The same thing hath happened to the fire, the which although it ought to be made of greatest account, yet it is reckoned of no worth because it is common and vulgar.
But even as the common fire, and that known to every one, doth by very many most profitable operations bring much good to mortals, who can least of all want the use thereof; so also I affirm that those artificial and hidden fires are to be very much accounted of, because a Phisician can hardly be without them, for the preparations of efficacious Medicines, and a Chymist can never want for the transmutation of the more base metals into better, either of them without the aid of those fires shall perform nothing of any great moment in Chymical Labours.
He that works and is ignorant of such fires, what will he effect in metallick operations? he being conversant in cold and darkness is afflicted with the Same difficulty, as a certain brewer or baker is, who wants wood in the winter season, or who is not able to use water, it being congealed into ice, the one he cannot bake although he hath the best meal, and the other brew drink although he have abundance of the best malt.
So also goes the matter with Alchymical Affairs, the want whereof causeth that we handle not the most noble Alchimy with any profit, but rather receive loss from the same, daily experience being witness, that 100 are wont to be sooner undone than that it happens to any one man to get himself riches thereby. The blame of which discommodity is not to be transferred on an impossibility of the art, but rather to be imputed to the want of those moist, cold, and ripening fires extracted out of Salts, the which after what sort they ought to be used for the amendment of metals, as also for medicine and other arts, shall be taught partly in this, and partly in the other Centuries.