The generation of all natural things is twofold: Naturall, and without Art; and Artificiall, _viz._ by Alchymie. Although in generall it may bee said that all things are naturally generated of the Earth by means of putrefaction. For Putrefaction is the chiefe degree, and first step to Generation. Now Putrefaction is occasioned by a moist heat. For a continuall moist heat causeth putrefaction, and changeth all naturall things from their first form, and essence, as also their vertues, and efficacy, into another thing. For as putrefaction in the stomach changeth, and reduceth all meats into dung; so also putrefaction out of the stomach in a glasse, changeth all things from one form into another, from one essence into another, from one colour into another, from one smell into another, from one vertue into another, from one power into another, from one property into another, and generally from one quality into another. For it is evident, and proved by daily experience, that many good things, which are wholsome, and medicinable, become after putrefaction naught, unwholsome, and meer poison. So on the contrary, there are many bad, unwholsome, poisonous, and hurtfull things, which after their putrefaction become good, lose all their unwholsomnesse, and become wonderfull medicinable: because putrefaction produceth great matters, as of this wee have a most famous example in the holy Gospel, where Christ saith: Unlesse a grain of Wheat bee cast into the Earth, and be putrefied, it cannot bring forth fruit in a hundred fold. Hence also we must know, that many things are multiplyed in putrefaction so as to bring forth excellent fruit. For putrefaction is the change, and death of all things, and destruction of the first essence of all Naturall things; whence there ariseth a regeneration, and new generation a thousand times better, &c. [Sidenote: Putrefaction is the first degree to generation.] [Sidenote: Putrefaction is manifold.] Seeing therefore putrefaction is the first degree, and step to generation; it is very necessary that wee know putrefaction well. Now there are many kinds of putrefactions, and one produceth its generation in another manner, then doth another. One also sooner then another. Wee said also that moisture, and heat were the first degree, and step to putrefaction, which produceth all things, as a Hen doth her egs. Wherefore through, and in putrefaction, all mucilaginous flegme, and matter is made living, whatsoever it prove to be at last. [Sidenote: An artificiall hatching of Chickens.] An example of this you have in egs, in which there is a mucilaginous humour, which by any kind of moderate continuall heat is putrefied, and turned into a living Chicke, not only by the heat of the Hen, but any such kind of heat. For in such a degree of Fire egs may be brought to maturity in a glasse, and ashes, and become living birds: yea any man may ripen an egge in his arm-hole, and hatch a Chicke, as well as the Hen.