Report discussing the status of the five main thermonuclear research groups at University of California Radiation Laboratory. The Mirror Machine program is given a more detailed description.

The following report demonstrates experimental verification of a method described in a previous paper--that involves measuring the dispersive microwave propagation coefficients simultaneously at several frequencies and comparing measured values with the values calculated for various distribution functions--and describes the procedure used to determine the distribution function in a sample laboratory plasma experiment.

The following report examines the trapping of charged particles, fast electrons especially, within the geomagnetic field.

The following report is a bibliography containing reports, books and journals on the production of high temperatures (2000-3000 F). The literature provided only covers to the end of 1957.

"Preliminary results are given for pumping neutral hydrogen gas in 1-second pulses by the gettering action of an evaporated coating of molybdenum. One second gas in-puts are observed at equivalent pumping speeds > 10-4 liters/second at 1 x 10-(-8) mm Hg in a 70-liter volume system. Base pressures <1 x 10-(-10) mm Hg are achieved by gettering with the static evaporated coating and pumping with a 4 in. oil diffusion pump simultaneously. Criteria for choice of gettering metal and a brief outline of pumping requirements for controlled fusion devices called Pyrotrons are included."

Existing experimental information about the nucleon-anitnucleon interaction is reviewed, and a description is given of a theoretical model, based on the Yukawa theory, which seems able to explain the experimental results.