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
Helen Hughes (scientist) Cawthron Institute. She also spent 13 years on Cawthron Institute's board. Her stepmother was Kathleen Curtis, Lady Rigg, a notable mycologist. Hughes was appointed a Commander of the Order of the British Empire in the 1993 Queen's Birthday Honours. She is a Companion of the Royal Society of New Zealand. Helen Hughes (scientist) Helen Hannah Rigg Hughes was New Zealand's first Parliamentary Commissioner for the Environment. She was appointed in 1987, following the creation of the role by the Environment Act 1986. Hughes discovered her passion for botany while a student at Nelson College for Girls, and studied toward a