1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 XENA2 the most famous of all

the most famous of all racing yachts

which were crafted in Crete and discovered in a tomb in Vaphio

Rare Old Canadian Whiskey from the Seagram-Distillers Corp

8th century

This is an original 1925 photogravure of Russian Pilgrims in the desert on the way to Sinai

1890 Article Optical Telegraphy Vintage Projecting Lantern Lamp Colonel MAB1 XENA2 the most famous of allThis 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