The 50th Anniversary of the Treadwellian Father‐and‐Son Era (1881–1959) at the ETH

This year marks the 50th anniversary of the end of the Treadwellian Era. More than three quarters of a century earlier American Frederic Pearson Treadwell (1857–1918) began his research at the Eidgenössiches Polytechnikum (since June 23, 1911, known as the Eidgenössische Technische Hochschule ( ETH )). After Frederic 's death, William Dupré Treadwell (1885–1959), Frederic 's son, was later appointed as assistant professor. Together, their publications in analytical, inorganic, and physical chemistry spanned three quarters of a century, and their impact on the usage of instrumentation at the ETH and in the chemical world is still apparent today.