From Introduction: "Thrust augmentation of an axial-flow-type turbojet engine by burning fuel in the tail pipe is discussed in references 1 to 3. Thrust augmentation of the same turbojet engine by water injection at the compressor inlet is reported in reference 4."

From Summary: "A theoretical analysis is presented that permits estimation of the changes in piston-temperature distribution induced by variations in the crown thickness, the ring-groove-pad thickness, and the undercrown surface heat-transfer coefficient. The analysis consists of the calculation of operating temperatures at various points in the piston body on the basis of the experimentally determined surface heat-transfer coefficients and boundary-region temperatures, as well as arbitrarily selected surface coefficients."

Letter from Daniel W. Kempner to Zip Abrasive Company asking for supplies for a lawn mower.

A special circular published by the Brotherhood of Railroad Trainmen, from the office of the president, Mr. A. F. Whitney, on December 15, 1942. The circular addresses lodge members of the Brotherhood, referring to a prior annual report about an Accident and Health insurance plan for the members of the Brotherhood, however, the insurance with the World Insurance Company will be terminated by December 31, 1942.