Christian Eduard Langethal (1806-1878) was a plant science expert, botanist, and agricultural historian. He worked as a specialist author in the fields of agricultural botany and agricultural history. His most successful work, presented here, became the textbook of agricultural plant science for practical farmers and friends of the plant kingdom. It was published in several volumes (from 1841 to 1845) and went through five editions, the last being in 1876 under the title Handbook of Agricultural Plant Science and Cultivation. For decades, it was regarded as a standard work for agricultural scientists, botanists, and farmers. The comprehensive description of the most important agricultural crops, vegetables, medicinal plants, as well as fruit and forest trees related to agriculture served as a model for subsequent textbook authors. Illustrated with.