Technical reprint providing an outline of theories offering explanations for some types of corrosion in water circuits, a description of processes involved in "bio-fouling," the analyses of characteristic deposits, and suggestions as to the importance of clean surfaces prerequisite to the successful application of corrosion prevention and control methods. Also includes a discussion of the chlorination of condenser waters led by researchers of the Continental Oil Company. The paper was presented to the Division of Refining at the Eleventh Mid-Year Meeting of the American Petroleum Institute in Tulsa, Oklahoma. Includes 20 black and white photographic illustrations. The work is digitized in its entirety.

Wallace & Tiernan, Inc., now Evoqua Water Technologies, was founded in 1911 by Charles F. Wallace and Martin F. Tiernan in New York City, New York specializing in the chlorine feeder equipment industry.