Introduction. -- Blondlot and the n-rays. -- Paradigms enow : some mirages of biology. -- Aberrations of physics : Irving Langmuir investigates. -- Nor any drop to drink : the tale of polywater. -- The wilder shores of credulity. -- Energy unlimited. -- What the doctor ordered. -- Science, chauvinism and bigotry. -- The climate of fear. -- Science in the Third Reich : bigotry, racism and extinction. -- Nature nurtured : the rise and fall of eugenics. -- Envoi.