In 1679, the physcist and mathematician, Denis Papin, who was Anglo French (1647-1712) invented the stream pot — which he clled the digesteur. In this pot water was boiled at a temperature higher than normal. In this way meat and other foods were cooked in less time than when cooked in conventional pots of that time. Mr. Papin presented his invention to the Royal Society in London in 1681, but the novelty did not become popular and as a scientific study. Nevertheless this work served to admit him as a member of that scientific society. The wworld then had to wait until the 20th Century for this invention to be made and used as the PRESSURE COOKER.