Abstract. Measurements were made to determine the effect of thermal cycling on heat transfer from slug to jack using a slug with a sand blasted surface. The value of the transfer coefficient h decreased from initial values ranging from 10 to [formula], to values and [formula] after 1700 cycles, and to a range of 0.15 to 0.45 [formula] after 3200 cycles. Comparisons are made with the results found for slugs with different surfaces.

"This work is a continuation of an investigation begun in January, 1945, on a laboratory study of various methods for the chlorination of TO3. The work carried out this month deals entirely with gas phase chlorination, the liquid phase chlorination of TO3 having been turned over to Miss Hubbard. Gas phase chlorination of TO3 by means of CCl4, S2Cl2, SOCl2, SO2Cl2, and Cl2 have been carried out under varying conditions in the several different types of reactors."

Front: Text describes action on various war fronts: U.S. Fleet Active; Alies Race Through Reich - Soviets Strike Toward Austria Maps: Allies race through Reich--Soviets strike toward Austria [Germany], Pacific fleet action, Budapest to Vienna. Inset map: The Ruhr. Back: Color photograph of a flame-throwing tank is accompanied by text highlighting research and development to produce new weapons.