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Pomology is a strand of botany specialising in the study of types and varieties of fruit, together with their description and classification. In 1758, the Dutch scientist and mathematician Johann Hermann Knoop produced an extensive work with descriptions and illustrations of "the best varieties of endangered apples and pears in Holland, Germany, France, England, and other countries, which was the reason why they were grown." Two years later, in 1760, his work was translated into German, and soon began to enjoy growing popularity owing to the growing interest in the cultivation of new varieties. In 1766, Johann Michael Seligmann updated his work and new illustrations were added in with the most vibrant colours. The update included several varieties of cherries and plums which are also shown in this facsimile. Text in English, French, Italian & German.