Sachs, << zahks, >> Julius von (1832-1897), a German botanist, was the founder of the science of plant physiology. His Textbook of Botany (1868) had great influence in the United States by emphasizing the use of living plants in teaching botany. His History of Botany (1875) is one of the best sources of information about all aspects of botany up to 1860. Sachs was born on Oct. 2, 1832, in Breslau, Germany (now Wroclaw, Poland). He died on May 29, 1897.