for science, and soon became recognized as a safe scientific thinker and investigator. He was one who never rushed to conclusions however enticing the facts discovered appeared, but took time to look into every possible avenue of approach to the subject, being satisfied only when his conclusions rested upon a foundation that could not be shaken. Consequently he was not a prolific writer. Indeed, he gave himself so unreserve~ly to his teaching and his students that resfearch work was possible only during his brief vacations and a t odd hours.