1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 XENA2 McLain Orthopedic Sanitarium located at

McLain Orthopedic Sanitarium located at 934 Aubert Avenue

located in Belfast

Library Package

the most famous of all racing yachts

1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 XENA2 McLain Orthopedic Sanitarium located atThis is an original 1890 two page (1 page, double sided) article about the Optical Telegraphy, devised by Colonel Mangin, a French officer. Of the plans proposed by this officer, two were commonly used, one involving the use of lenses; and the other the telescopic system. In the first, the source of the light is a simple petroleum lamp; while the second utilizes the sunlight or electric light. Please see both images. CONDITION This 121+ year old Item