other passion was collecting coincidences. He published a book with the title Das Gesetz der Serie (The Law of the Series, never translated into English) in which he recounted some 100 anecdotes of coincidences that had led him to formulate his theory of seriality. He postulated that all events are connected by waves of seriality. The unknown forces would cause what is perceived as just the peaks, or groupings and coincidences. Kammerer was known, for example, to make notes in public parks of what numbers of people were passing by, how many carried umbrellas etc. Albert Einstein called the idea of seriality "interesting, and by no means absurd", and Carl Jung drew upon Kammerer's work in his essay Synchronicity. Arthur Koestler reported that when he was doing research for his biography on Kammerer, he was subjected to "a meteor shower" of coincidences, as if Kammerer's ghost were grinning down at him and saying, "I told you so!" Death Six weeks after the accusation by Noble, Kammerer committed suicide in the forest of Schneeberg, an event which is discussed by Arthur Koestler in his book on Kammerer and his theories. Later Controversy Attempts to reproduce Kammerer's experiments The Lamarckian biologist Ernest MacBride supported the experiments of Kammerer but commented that they would have to be repeated to be accepted by other scientists. The British zoologist Harold Munro Fox attempted to replicate some of Kammerer's experiments but produced negative results. Biology professor Harry Gershenowitz also attempted to duplicate Kammerer's experiment with a related species, Bombina orientalis; but he had to terminate the experiment for lack of funds. The Case of the Midwife Toad Interest in Kammerer revived in 1971 with the publication of Arthur Koestler's book The Case of the Midwife Toad. Koestler thought that Kammerer's experiments on the midwife toad may have been tampered with by a Nazi sympathizer at the University of Vienna. Certainly, as Koestler writes, "the Hakenkreuzler, the swastika-wearers, as the Austrian Nazis of the early days were called, were growing in power. One center of ferment was the University of Vienna where, on the traditional Saturday morning student parades, bloody battles were fought. Kammerer was known by his public lectures and newspaper articles as an ardent pacifist and Socialist; it was also known that he was going to build an institute in Soviet Russia. An act of sabotage in the laboratory would have been… in keeping with