Acetylene of 180°. Acetylene was discovered in 1836 by Edmund Davy, who identified it as a "new carburet of hydrogen". It was rediscovered in 1860 by French chemist Marcellin Berthelot, who coined the name "acétylène". Berthelot's empirical formula for acetylene (CH), as well as the alternative name "quadricarbure d'hydrogène" ("hydrogen quadricarbide"), were incorrect because chemists at that time used the wrong atomic mass for carbon (6 instead of 12). Berthelot was able to prepare this gas by passing vapours of organic compounds (methanol, ethanol, etc.) through a red-hot tube and collecting the effluent. He also found that acetylene was formed by
Colt Acetylene Flash Lantern pressure is removed the light reduces to a minute jet, not visible to the receiving station. It is carried in three leather cases, one holding the tripod, one the generator, and the third the flash lantern, reading lamp, and remaining parts. It is assembled on an extension tripod, with the flash lantern on top, the generator attached to the legs beneath the lantern, and the reading lamp is placed on one leg near the lantern. The signals can be seen up to thirty miles with an ordinary field glass. Colt Acetylene Flash Lantern The Colt Acetylene Flash Lantern (or Colt