| Giambattista Della Porta |
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| 1538 births | |
| porta, giambattista della | |
| 1615 deaths | |
| people from naples | |
| pre-19th century cryptographers | |
| italian scientists | |
| porta, giambattisa della | |
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Della Porta founded the '' Otiosi '' (Men of Leisure) an early scientific society, a condition of membership being to demonstrate a new discovery in the Natural Science s. The '' Academia Secretorum Naturae '' was suspected of dabbling in the Occult and Della Porta was summoned to Rome by Pope Paul V . The Society was closed down by the Inquisition but Della Porta defended and justified his search for truth in nature. He was cautioned and allowed to continue his studies of investigating nature's properties. In 1586 Della Porta published a work on Physiognomy which later influenced the Swiss Pastor Johann Kaspar Lavater (1741-1801). Della Porta wrote extensively upon a wide spectrum of subjects throughout his life - including an agricultural encyclopædia entitled ''Villa'', as well as works on Meteorology , Optics , and Astronomy . His work ''Phytognomica'' lists plants according to their geographical location. In a later edition of his '' Natural Magic '', Della Porta described a Camera Obscura with a Convex Lens ; though he was not the inventor of this technical refinement, the popularity of his work helped spread knowledge of the device. In later life Della Porta collected rare specimens from the natural world and grew exotic plants. His private museum was visited by travellers and was one the earliest examples of Natural History museuems. It inspired the Jesuit Athanasius Kircher to begin a similar collection in Rome. Della Porta also wrote fourteen Prose Comedies and two Dramatic Tragedies which became source material for several 17th Century dramatists. Della Porta's works are well-represented in the Library Of Sir Thomas Browne by no fewer than six titles. CRYPTOGRAPHY In 1563 , Della Porta published ''De Furtivis Literarum Notis'', a work in Cryptography , which described the first known digraphic substitution cipherDavid Kahn, ''The Codebreakers'', 1967, p. 139, and made advances towards the concept of Polyalphabetic Substitution . Charles J. Mendelsohn commented, ''"He was, in my opinion, the outstanding cryptographer of the Renaissance. Some unknown who worked in a hidden room behind closed doors may possibly have surpassed him in general grasp of the subject, but among those whose work can be studied he towers like a giant."'' WORKS
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