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CHAP. IV. Of the Causes assigned by the most approved Au∣thors for their generations, both efficient and material, and the manner thereof.
FOr the material and efficient causes, and manner of the generation of Metals; We shall enume∣rate some opinions of the chief Authors, and leave the Reader to chuse which he judgeth most probable, or most true; because we mean not to dogmatize nor impose upon any, but rather to move all men to a di∣ligent search after the things of this nature, that (if possible) the truth of their generations may be found forth, and discovered.
In the first place we shall give the opinion of the Aristotelians, and to eschew tediousness, shall tran∣scribe what Dr. Iorden hath written in that case, with his censure upon it, and his own opinion adjoyned; because that little Tract of his may be in few mens hands,* 1.1 and hard to be got; who relateth it thus:
For the manner of generation of Minerals, although it be alike in all, yet it differs from the generation of ani∣mate bodies, whether animals or vegetables, in this, that having no seed, they have no power, or instinct of producing other individuals, but have their species perpetuated, per virtutem seu spiritum semini Ana∣logum, by a spiritual substance proportionable to seed, which is not resident in every individual, as it is in animals and plants, but in their proper wombs. This (saith he) is the judgment of Petrus Severinus,* 1.2