Ioan. Baptistae Portae neap. De refractione optices parte, libri nouem (1593)
Porta, Giambattista della, approximately 1535-1615 · Neapoli : Ex officina Horatij Saluiani : Apud Io. Iacobum Carlinum, & Antonium Pacem · leaf 87
DE OCVLORVM ANATOME LIB. IIL $, conftitues, vbi radij oculares plus extendi non pofsir-t.fic re¬ moto oculo , circumadum lapillis fpatium reperies . Idq; hoc modo demonitrabimus . … S Sit cryftallini centrum I, & pupilla A B C D rotunda , oppo- fita ei fuperficies B F G H, Linea I M ereda perpendiculariter fuper fuperficiem E F G H, & tranfiens per centrum cryftallini I. Protrahantur linef a centro cryfiallini I ad pupillae extremi¬ tates ad fubiedu planum , & erunt I B F, I C…
Optics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Art magic, or, Mudane, sub-mundane and super-mundane spiritism [microform] a treatise in three parts and twenty-three sections, descriptive of art magic, spiritism, the different orders of spirits in the universe known to be related to, or in communication with man; together with directions for invoking, controlling, and discharging spirits, and the uses and abuses, dangers and possibilities of magical art (1898)](https://img.insideoutlibrary.com/img/200/ia-artmagicormudane1898brit-293-18.webp)
