Experiments on the Spoilage of Tomato Ketchup

The tomato, Lycopersicum esculentum, is supposed to be native to South or Central America. The large fruits commonly used grow only under cultivation, but the variety with small, spherical fruits, known as L. cerasiforme, has been found on the shore of Peru and is considered by De Candolle as belonging to the same species as L. esculentum. Though grown extensively in Europe, there is nothing to in...