R. A. Witthaus

R. A. Witthaus (1846–1915) was an American chemist and toxicologist. Born Rudolph August Witthaus in New York, he studied at Columbia and in Paris, and taught chemistry and physiology at the University of the City of New York, the University of Vermont, the University at Buffalo and finally at Cornell University Medical College. He was frequently called as an expert witness in poisoning trials, including several celebrated murder cases, and he wrote textbooks of general and medical chemistry and a Manual of Toxicology. With the lawyer Tracy C. Becker he edited the four-volume Medical Jurisprudence, Forensic Medicine and Toxicology, published from 1894, long a standard American reference.