@misc{indiciae9c5ab2676065, title = {Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures — Illustration, Page 490}, year = {1914}, url = {https://www.biodiversitylibrary.org/page/19572497}, note = {Source identifier: page-19572497} }