| Notes | An example of preventing microbial decomposition without knowledge of micro-organisms, and the forerunner of the canning industry. At time of the Sponaneous Generation. quarrel, canning had been used for 50 years, and Pasteur referred to it in his writings. As Dubos wrote: Pasteur demonstrated what housewives knew. Metal cans, including the tin-plated variety were introduced in the 1920's. |