CHAP. XII. Of extracting Oiles of vegetables by Distillation.
ALmost all hearbes that carry their flowres and seeds in an umbell, have seeeds of a hot, subtle and aiery substanc, and consequently oyly. Now because the oyly substance that is conteined in simple bodyes is of two kindes, therefore the manner also of extracting is twofold. For some is grosse, ear∣thy, viscous, and wholy confused and mixt with the bodyes out of which they ought to be drawne, as that which wee have sayd is usually extracted by expression; * 1.1 this because it most tenaciously adheres to the grosser substance, and part of the bo∣dy, therefore it cannot by reason of this naturall grossnesse, bee lifted up, or as∣cend. Othersome are of a slender, and aiery substance, which is easily severed from their body, wherefore being put to distillation it easily rises: such is the oyly sub∣stance of aromaticke things, as of Iuniper, Aniseeds, Cloves, Nutmegs, Cinnamon, Pepper, Ginger, and the like odoriferous and spicy things. This is the manner of * 1.2 extracting oyles out of them; let your matter be well beaten and infused in water to that proportion, that for every pound of the materiall, there may bee ten pints of water; infuse it in a copper bottome, having a head thereto either tinned or silvered over, and furnished with a couller filled with cold water. Set your vessell upon a furnace having a fire in it, or else in sand, or ashes. When as the water contained in the head shall waxe hot, you must draw it forth, and put in cold, that so the spirits may the better be condensed, and may not fly away: you shall put a long neckt recei∣ver to the nose of the Alembecke, and you shall increase the fire, untill the things conteined in the Alembecke boyle.
There is also another manner of performing this distillation, the matter preserved * 1.3 and infused as we have formerly declared, shall be put in a brasse or copper bottome covered with his head, to which shall be fitted, and well luted, a worme of Tinne, this worme shall runne through a barrell filled with cold water, that the liquor which flowes forth with the oyle, may be cooled in the passage forth; at the lower end of this worme you shall set your receiver. The fire gentle at the first, shall be encrea∣sed by little and little, untill the conteined matter, as wee formerly sayd, do boyle; but take heede that you make not too quicke or vehement a fire, for so the matter swelling up by boyling may exceede the bounds of the containing vessell, and so vio∣lently fly over.
Observing these things, you shall presently at the very first see an oiely moi∣sture flowing forth together with the watrish. When the oyle hath done owing which you may know by the colour of the distilled liquor, as also by the consistence