On the Trail of Poison Mysteries by Paul D. Paddock (Popular Mechanics, 1929)
This is an interesting article on of the early role of Forensic Toxicology in criminal investigations.
An excerpt “Poisons and mysterious deaths have been linked in the public mind since the dawn of history but modern chemical science has done much to rob such cases of their baffling aspects. Along with the scientific detective, the chemist is winning increased recognition in the war against crime.”