Io. Bapt. Portae Neapolitani Magiae natvralis libri XX (1589)
Porta, Giambattista della, approximately 1535-1615 · Neapoli : Apud Horatium Saluianum · leaf 151
elineam frege- tit, punca, qua fciffurz limites erunt, dittidentesillicó proprietatis,& virtntis erüt, |, Aw| cecisq;laborant difcordijs, non fine magno admirationis momento: nam duo hzc S J): 9| puné&a quàm fimul vnita effent,eandem vim ad polum fe dirigédi forticbautur,nuoc [oS | diuortio… … Sit exempli gratis mons magnetinus ABCD. & fitlineaà Septentrione ad Meridiem AB. fi à montea2 pidem fcinderimus AB. linea ip(a AB.inlapidepolarem lincam demonftrabit,ab Aquilone, ad Meri- diem. Si veró lapidem fregerimusper latum, vnumquodg; fruftulum faam feruabit lineam . Scindas turlapis AB.…
Science -- Early works to 1800 · Industrial arts -- Early works to 1800 · Magnetism -- Early works to 1800
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Historia novi et admirabilis fontis balneique Bollensis in Ducatu Wirtembergico ad acidulas Goepingenses : mandato illustris. principis ac D.D. Frid. Ducis Vvirtemberg. et Teccensis. Comitis Montisbelig. &c. ac Equ. Ord. Reg. Gall. ad subditorum omniumqu[e] vicinorum & exterorum emolumentum ob vires insignes adornati, (1598)](https://img.insideoutlibrary.com/img/200/ia-historianovietad1598bauh-378-100.webp)
