Abstract These notes are Harry M. Ullmann’s class notes made by him during his PhD studies at Johns Hopkins University in the early 1890s. The notes provide insight on teaching methods and content in late 19th century chemistry at a major U.S. university. Also included is a humorous diary of travel through Europe in the style of Mark Twain’s travels abroad. Ullmann was a professor of chemistry at Lehigh University from 1894 to 1938. He was chairman of the combined Chemistry and Chemical...