Growth of Canning Industry. The canning industry has within a few years growu to colossal proportions. propor-tions. It Is an art that dates back a little more than 100 years. Wo owe this art of preserving foods through rendering them sterile by means of heat and maintaining (hem in that condition in hermetically sealed containers, con-tainers, to a Frenchman. Nicholas Ap-pere, Ap-pere, who began his experiments in canning in 1795 at Chalmons sur Jlarne. He worked and experimented experiment-ed for 15 years and In 1S10 hud practically prac-tically perfected his system. The first canning in the United States was for the preservation of sea foods. It was not until the decade following the Civil war that the superiority of canned foods over those which were preserved by salting, drying and pickling became recognized. Today the United States is the largest producer and consumer of canned foods.