59. All well scented Oils, may by means of our volatile saline Spirit, be purified to the highest Degree, and afterwards be reduced to a hard Body: which Body then is no common gross Body (as being a coagulated Spirit) but a clear, transparent spiritual pure Body.
60. This Labour may with profit be practis’d on Amber, whose Oil being by rectification made clear and transparent, and then digested with our fiery salt Spirit, becomes hard again as it was before distillation; by which means we may make pieces of Amber as big as we please, and may mix with it some small Threds of Sol, and so shall have the old highly esteemed Stone called Chrysophoros; or else we may put into it, whilst yet it is soft, little Worms, Flies, Spiders, Pismires, or whatever else we please, which is a notable Curiosity and shews as if they were grown there, to those that are ignorant of this Art.
61. In the same manner may the Oil of Turpentine be reduced to a hard Gum, to very good use and purpose.
62. All distilled Oils of Seeds, Woods and Spices, when by long standing, they turn yellow, red or thick, may by means of this fiery salt Spirit be again made clear, thin and transparent, when some of the said Spirit is poured on the said Oils and so distilled, some part of the Oil comes over clear and transparent, the other part remaining in the Glass, in the form of an hard Gum, in which small Insects may be inclosed as before said of the Amber.
63. Amongst all Oils these following are apt to grow thick and ropy, viz. the Oils of Lignum Rhodii, Oranges, Limmons, Juniper-berries; those of Cloves and Cinamon are apt to grow red. The Oils of Fennel-seed, Anniss, Coriander, Caroway and Cumin-seed, and all other Oils distill’d from Herbs and Seeds, that have hollow Stalks, and are umbelliferous, forasmuch as they abound with much volatile Salt, are apt to turn thick: If any of these be rectified with an acid saline Spirit, it immediately destroys the volatile Salt, and the Oil becomes clear and transparent, and the remaining part of the Oil becomes hard as a Gum, and is a special inward and outward Medicine.
64. And forasmuch as a fiery saline Spirit can make old and red Oils clear, thin and transparent, we may conclude, that such a Spirit is able also to volatilize and bring over by distillation those Oils which by length of time are become hard and dry in Seeds, Herbs and Woods, and cannot by maceration in water be brought over, but must by this more powerfull means be made thin and volatile, that they may afford their Oils as easily in distillation, as green Seeds and Woods are used to do.
65. Now as thick and ropy distill’d Oils may be made thin, by means of saline Spirits; so there are some salt Spirits wherewith we can coagulate all thin and subtil Oils, in the form of a volatile pleasant strong scented Salt, of great use in Physick.
66. In this manner, viz. by pouring a strong saline Spirit upon them, we can distill subtil and powerfull Oils from all rosins, gums and thick juices, and afterwards reduce them again to the hardness of Amber.
Thus Mastick, Frankincense, Benzoin, Storax, Camphir, &c. afford very pure clear and transparent Oils, which when hardned to the consistence of Amber, draw straws and other light matters to them like it.
67. In like manner also can all sulphureous Minerals be purified to the highest degree, when distill’d with such a Spirit, and then may be reduced again to hard transparent clarified Bodies: and amongst the rest Antimony and Orpiment do afford in this way most powerfull and superlatively penetrating medicinal Stones.