Snow, the first specialist in anesthesiology, delivered Queen Victoria with the aid of chloroform in 1853 and 1857. This work was edited for publication after Snow's premature death by Richardson, who included a biography of Snow. Snow's final book, which consisted of 538pp. compared to only 88pp. in his first book on anesthesia published in 1847, put the administration of chloroform and ether on a scientific basis. Snow also investigated amylene, which he was the first to administer. Digital facsimile of William T. G. Morton's copy in the Countway Library of Medicine from the Internet Archive at this link.