Johann Gottfried Zinn (Figure 4) was born in the small village of Schwabach, a few miles south of Nuremberg, Bavaria, to prosperous parents. His father was counselor of the regional royal treasury in Ansbach, the town where Zinn went to high school and where Leonard Fuchs had been active almost 200 years earlier.14 Zinn attended medical school at the newly founded University of Gottingen, where he was the favorite student of Albrecht von Haller (1708-1777), the famous professor of anatomy, physiology, and botany. After graduation, Zinn moved to Berlin, where the large anatomical institute afforded a better opportunity for the dissections that formed the foundation for his book. In 1754 he returned to Gottingen University to assume the Chair of Medicine. However, the department of anatomy was assigned to another professor, which deprived Zinn of further studies in this area and led him to turn his energies toward botany. He carried on an active correspondence with Carolus Linnaeus (1707-1778), the great Swedish botanist, zoologist, physician, and founder of the modern morphologic taxonomy system, which is now gradually being supplanted by genetic DNA classification. Linnaeus named a genus of plants after Zinn, who had first described them in detail and had died shortly thereafter at the age of 31 years, apparently of tuberculosis.