Walter Stanley Haines  Walter Stanley Haines (September 27, 1850 – January 27, 1923) was an American professor of chemistry, materia medica, and toxicology. He taught at Rush Medical College in Chicago for almost 50 years, and was acclaimed for his teaching. With Frederick Peterson, he published a comprehensive guide to medicine and the law, "A Textbook on Legal Medicine and Toxicology", which went through many editions. An early forensic scientist, Haines testified in a number of sensational trials, including those relating to the Haymarket bombing of 1886, the disappearance of Adolph Luetgert's second wife Louisa in 1897, and the suspicious deaths in multimillionaire Thomas Hunton Swope's family in 1909. Walter Stanley Haines was born September 27, 1850, to John Charles Haines and Emma Adams (Fay) Haines of Chicago. His father was an ardent abolitionist and held the position of mayor of Chicago for two terms (1858–1860). Walter was one of four children. He graduated from Chicago High School in 1869, ranking first in his class. Walter Haines attended Massachusetts Institute of Technology for two years, 1869–1871, but returned to Chicago as a result of illness. Changing his major from chemistry to medicine, he earned a medical degree from Chicago Medical College in 1873. Before graduating, he was offered the position of professor of chemistry at Chicago Medical College, which he held from 1872 to 1876. He interned at Mercy Hospital in Chicago and also visited France to study at the Sorbonne in Paris. In 1876, at age 26, Walter Haines was offered a professorship in chemistry at Rush Medical College in Chicago, which he accepted. Haines spent nearly fifty years there, teaching chemistry, materia medica, and toxicology. He was acclaimed for both the quality of his teaching and his kind and sympathetic manner:  With Frederick Peterson, Haines published "A Textbook on Legal Medicine and Toxicology", a comprehensive guide to medicine and the law. Haine's contributions included a chapter on "General Principles of Toxicology", which described common poisons, their symptoms and treatment, and best practices for postmortem examinations. The textbook first appeared in two volumes in 1903–1904 and went through multiple editions. Haines was recognized as an authority in chemistry. He was a member of the American Chemical Society, the American Medical Association, and the Chemical Society of London, among others.