WITHIN a few weeks of the death of Prof. B. Brauner, Czechoslovak science sustained a second heavy loss. Prof. Václav Posejpal, professor of experimental physics at the Charles University of Prague, died suddenly on April 8. He was born at Chlumec in Moravia on December 20, 1874, and studied at Hradec Kralové before going to Prague and taking his degree in natural sciences in 1900. He selected for his dissertation a thesis on Fourier series. After a period in Paris, studying certain Volta effects on magnetic fields, he returned to Prague, becoming Privatdocent at the University in 1910. In 1919 he was installed as professor of physics, and was Dean of the Faculty of Sciences in 1929–30.