On this day, 34 years ago, October 16, 1991 (September 9, 1991 in the lunar calendar), there was a new explanation of Mozart's death. On October 16, 1991, a British doctor found that Austrian composer Mozart may have died of poisoning after taking mercury and antimony while treating depression and fever. According to Reuters, the doctor named James reported his research results to a British medical association that Mozart apparently died of pneumonia and kidney failure in 1791. It is likely that doctors used mercury and antimony during treatment. Modern medicine believes that mercury is a nephrotoxic agent, while antimony was often contaminated with arsenic in Vienna at the time. Antimony and arsenic compounds are fatal. Mozart died in Vienna, Austria at the age of thirty-five. There are various opinions as to the cause of his death. The most dramatic of these is Mozart's poisoning by his jealous but incompetent rival at court, Salieri.