All things being prepared in the manner aforesaid, let the Furnace be filled with wood up to the top, and if the wood be not dry enough, intermix with it, in the putting in from the bottom to the top, some dry Shrubs or Bushes, or small Faggot-sticks, by whose help the wood may be the more easily kindled. After the wood is kindled, and burns well, the hole in the top of the Furnace is to be close shut with its Stopper, that there may be no exit for the smoak, but that it may be forced to descend and seek its passage through the lower hole, by the Channel or Pipe. Therefore when the wood begins to burn, and yet can emit no flame, the heat presseth out all the juice, and forceth it into the pipe, in which, from the smoak, it is changed into an acid Juice or Liquor, which destilleth by the Pipe into the appointed receiving Barrel. All the wood being turned into Coals, and emitting no more fume, the whole Furnace, wheresoever it may admit the air; and also the hole to which the Pipe is fitted, is to be smeared over with wet ashes, that the Coals in the Furnace being suffocated or choaked, may remain entire. The Coals being taken out, may be put to necessary uses, being equal in goodness to other Charcoal which Colliers make in Woods. NB. I would have this understood, of such wood as is of a pretty good thickness, and suffers its self to be reduced into Coals; for if you cast into the Furnace Bushes or small Brushy wood, to press out the juice, you will obtain only a Powder of Coals, which after the juice is pressed out, is to be left in the Furnace open (not smeared over, as we taught above) till it pass into ashes, which is required for the coagulating the expressed juice; as shall appear by and by, when we come to speak of its coagulation. NB. When you have no occasion for Coals, or cannot sell them, it is necessary, that letting the Furnace be open, you suffer them to burn to ashes. If this operation be instituted in a place where there are stones fit to make Lime of, it would be worth the while to fill the Furnace with a layer of Wood, and another of Stones, from the bottom to the top, which Chymists call Stratum super Stratum, and after the juice is pressed out to open the Furnace, that the wood may be turned into ashes, by doing of which at the same time the stones will be calcined, and changed into Lime, which being exposed to the air, (yet so that the Rain cannot come to it) will fall to pieces into a fine powder. To this Powder, being mixed with wood ashes, the acid juice is to be poured, which was pressed out of the wood, that those two contrary natures may mutually work upon each other, and well unite: in which operation the sharp spirit of the wood loseth its Acrimony, and the fixed Salt of the wood and stones is altered, so that from both there proceedeth a contrary middle nature, and a sweeter salt; which being long exposed to the air, draweth from thence a Life, and is transmuted into the best Salt-Petre. NB. This mixture is so to be exposed to the air, that lying under a Covering or Roof, and being open on the sides, it may be defended from the Rain, and nevertheless attract the air. If it shall be dried by the air, it must be moistened again with the Urine of Men or Beasts, that it may never be throughly dry. If these things be rightly performed, you shall have plenty of the best Salt-petre, from this matter, in the space of a year and an half, or two years at the most; which being extracted, purified, and boiled up, shooteth into very pure Crystals. The rest of the matter being again laid in its former place, under the covering or shed, and being ordered in the same manner, as before, will in the space of two years produce new Salt-Petre, which may be extracted and boiled up as before; for that mixture still remaineth good, provided it be moistened with Urine when dry, as was said. NB. He that desireth to acquire Salt-petre sooner, after the conjunction of the acid spirit with the ashes, and the precipitation and mortification of both, from that conjoined matter, by the pouring on of water, he may extract and boil up the Salt, and then dissolve the Salt in Urine, and digest it by Circulatory Vessels; by which means he may obtain the best Salt-petre in the space of one year. This labour of pressing the juice out of Wood, and at the same time of making Stones into Lime, may be used in all those Cities and Places where wood and stones are plenty. But if this operation were to be instituted in a Wood, there would be no need of a Furnace built with stone, seeing that the Pile of Wood might be covered all over with green Turfs, after the same manner which Colliers use in making their Charcoal, only with this difference, that here must be a hole in the side, to which the duct or pipe is to be adjoined. The juice being pressed out, the pile or stack is to be every where well closed, that the Air may have no passage, if you would preserve the Coals. All being cooled, the Coals may be taken out and sold, or put to necessary uses, so that the expressed juice, which being received in no Vessel, would have vanished in smoke, plainly costs nothing; but if you do not desire Coals, let them be burnt into ashes, that they may serve for the coagulating the spirit into salt, and afterwards by the help of the air, in a certain space of time transmute it into good Salt-Petre.

  1. Ist der Ofen darin das holtz gebresset wirdt.
  2. Der deckel darmit der Ofen geschlossen wirdt.
  3. Die thur an dem Ofen dardurch man die kohlen aus nimbt.
  4. Seind die röhren darinnen sich der holtzsafft Condensirt vnd heraus rinnt.
  5. Ist ein fas darin der holt essig laufft.
  1. Ist der Ofen.
  2. Das distillier gefäs in dem Ofen.
  3. Das loch mit einem faltz dardurch das swänge eingetragen wird.
  4. Die Zange mit deckel darmit das gefäs nach dem eintragen geschlossë wirdt.
  5. Ein Eisen löffel darmit der schwan eingetragen wirdt.
  6. Die recipienten.
  7. Die banck darauf die recipienten ligen.
  8. der Laborant.
  1. Ist der Ofen wie er in der arbeit stehet.
  2. Ist der Vnterste theil des Ofens wie er offen ohne die vorder wand anzusehen.
  3. Ist das obertheil des Ofens.
  4. Der rost in dem Ofen.
  5. der Herd.
  6. der Müffel so auff den herd gehöret.
  7. der Deckel dar mit der Ofen oben gedecket wird wann kohlen darin sein vnd in voller arbeitstehet.
  8. das rauch fanglein an dem Ofen.

NB. It is here also to be noted, that the expressed juice carries along with it a sharp hot Oyl of a dark reddish colour, which is not to be cast away, but is to be poured upon the Ashes together with the acid Spirit, that putrefying with the Salts, it may with the rest put on the nature of Salt-petre. But he that will may apply the same to other uses; forasmuch as it is profitable for other things. Any Wood exposed to the Rain, or standing in the Water, easily rotting, being anointed with this Oyl, will be preserved, so that it will not so easily rot, seeing that the water cannot adhere to the Wood, but is forced to slide off, or is hindered from penetrating the Wood. Carters, or Waggoners may use the same instead of Grease to their Wheels and Axle-trees, especially when it is a little thickened with Suet or Rosin. But the best use of it that I yet know (if you except Salt-petre) is to dissolve and boil it with a sharp Lixivium made of Lime and Ashes, by which it becometh a very hot and penetrant Soap, procuring fertility; if a poor sandy ground be sprinkled with the same and moistened: For it rendereth it very fruitful; which thing it doth not only in Fields, but also in Trees and Vines, insomuch, that one Tun of it avails more in the fatening of Fields, than ten Cart Loads of Horse-dung or Cow-dung: And a Hogshead, or Tun of this Soap may be carried into Fields and Vineyards, far remote, more easily than ten Loads of Dung, which is carried to Vineyards situate in Rocky places with great labour, and no small charge.

NB. If this Soap be used for the fattening of Vines, too much of it is not to be used at a time, least the Vines grow too fat and luxuriant; therefore its moderate use is required, which needs not that exactness in the dunging of Arable Land: Although in that an excess brings damage, and indeed it is the excess of good things that doth harm. A Tree, or Vine being made too fat by dunging, grows luxuriant, and putteth forth more fruit than it can bear and bring to Maturity. The Wood it self becomes too fat and soft, so that in the Winter it is easily injured by the cold. Whence in all things a Mediocrity ought to be observed. This Black Soap made of the Oyl of Wood, is truly a very great gift of God, in those places where Sand renders the ground barren. Hence the admirable Wisdom of our Creator appeareth, as it were thus speaking to us: Ye rude, and unskilful men, wherefore do you leave this place uncultivated? Because you cannot sow it with any kind of Grain, I will that it shall produce wood, and afford you a matter, with which, if you will, you may render it fat. For it is sufficiently known, that Animals, and Vegetables rotting, dung the earth, and render it fat; which thing even the Rusticks have now learned, that they do the same without putrefying or rotting, when they cut down, and burn the Trees and Bushes, which had grown up in the Fields, during the long time of the War, and spread the Ashes on the ground, by which it is fatned. But that they know not how to save, invert, and use with the Ashes for dunging, the acid Spirit, and hot Oyl, which vanish in the burning, ought to seem strange to none, seeing that no man hath hitherto declared it to them. Nevertheless, I perswade my self that this way of dunging of Land, will come into use, in process of time, but I believe not quickly [here in Germany] by reason of that great quantity of grain which every place affordeth in this time of Peace. But if hereafter, a new War should happen (which God avert) and the Fields should lie many years untilled, through the want of Men, Horses, and other necessaries, then I believe, and not before, this necessary Art will be sought after.