Abstract Dr. Demtchenko's work is a compilation of theoretical studies of, and practical experiments with, fuel feed systems. It is presented in such clear form that theorists and technicians alike will find in it a valuable guide to this subject which is of such importance to aeronautical security. Although theory here has been gone into with some detail, its practical application has in no case been omitted and the work as a whole constitutes a veritable treatise on fuel systems.NB:...