Spectropia ; or, Surprising spectral illusions. Showing ghosts everywhere, and of any colour (1865)
Brown, J. H · London, Griffith and Farran · leaf 30
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Ghosts · Optical illusions
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Herrn Caesaris Ripa von Perusien, Ritters von St. Mauritio und Lazaro [et]c., Erneuerte Iconologia, oder, Bildersprach : worinen allerhand anmuhtige Aussbildungen ... erkläret werden (1669)](https://img.insideoutlibrary.com/img/200/ia-herrncaesarisrip00ripa-75-33.webp)
