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Show Has Exhibits of Grains The Field Museum of Natural His tory in Chicago has a department of botany with exhibits of economic grains in the natural state. In the department are shown more than 100 varieties of wheat grown in the United States, as well as wild grasses related to wheat spelt, ein-korn ein-korn and emmer. There are also some grains, estimated to be 5,500 years old and probably the most ancient in existence, taken from the city of Jemdet Nasr excavated in Iraq. These were charred in the fire that destroyed the ancient Su-merian Su-merian city. |