SECTION VI. — ALCHEMY. 102? 



Porta, Johannes Baptista. [Cont'd.] 

 Magias naturalis qui extant libri sunt : 



1. De mirabilium rerum, causis. 



2. De variis animalibus gignendis. 



3. De novis plantis producendis. 



4. De augenda supellectili. 



5. De metallorum transmutatione, 



6. De gemmarum adulteriis. 



7. De miraculis magnetis. 



8. De portentosis medelis. 



9. De mulierum cosmeticis. 



10. De extrahendis rerum essentiis. 



11. De myropoeia. 



12. De incendiariis ignibus. 



13. De raris ferri temperaturis. 



14. De miro conviviorum apparatu. 



15. De capiendis manu feris. 



16. De invisibilibus literarum notis, 



17. De catoptricis imaginibus. 



18. De staticis experimentis. 



19. De pneumaticis. 



20. Chaos. 



Natural Magick in twenty books, wherein are set forth all 

 the riches and delights of the natural sciences, with 

 engravings. London, 1658. Sm. folio. 



John Baptist Porta, of Naples, was born in 1538 and died in 1615. The first 

 edition of this work, comprised in four books, was published in 1553 

 when the author was only 15 years of age. This first edition is said not 

 to be extant ; a much enlarged edition was published in 1589, which 

 was followed by many others. Porta's description of the Camera 

 obscura has led historians to attribute to him its invention, but it was 

 known nearly one hundred years earlier to Leonardo da Vinci. In the 

 first edition, as well as in that of 1562, the camera obscura is described 

 in an imperfect form, without the lens. The latter important addition 

 first appears in the issue of 1589. Cf. Libri, Histor. math., iv. 



POYSELIUS, Ul.RlCHUS. See Aureum Vellus. 



Practice (The) of Lights, or an excellent and ancient treatise of the Philosophers' Stone. 

 See Collectanea chymica. 



Preceptes et instructions du pere Abraham a son fils. See R[ichebourg], J. M. D. 



Processus pro tinctura auff den mercurium sous et lun.«. See Aureum Vellus. 



PROPOSITIONES SIVE MAXIMvB in QUIBUS VERITAS TOTIUS ARTIS CHEMIC/E COMPREHENDI- 



TUR. See Artis aunfene ; also Theatrum chemicum. 



