Discussing the potential for the West Indes to be used as a uranium source.

Report presenting an investigation of a submerged air scoop consisting of a conventional scoop in a dimple in the fuselage surface at primarily low speeds. The internal and external flow characteristics of the basic inlet without boundary-layer control were studied by means of pressure and tuft surveys over a wide range of inlet-velocity ratio.

A progress report on the status of various projects in the area of radioactive materials and nuclear power covering the period from October to December 1954.

This report is a compilation of 48 investigator prepared summaries of recent progress in individual research programs of the Biology and Medical Division of the Argonne National Laboratory for the quarterly period ending April,1955. Individual reports are about 3-6 pages in length and often contain research data.

Volume provides a summary of the progress of each agricultural experiment station. Also includes statistics, discussions of foreign investigations, and selected studies.

Note presenting a hot-wire anemometer used to study turbojet-engine compressor rotating stall and surge. The system was capable of measuring flow over a frequency range of zero to 500 cycles per second. A description of the anemometer and a description of the dynamic characteristics, static characteristics, and operation and performance are provided.

Report describing "Program D", a nuclear reactor calculation program for the AGT Evendale IBM 701 digital computer. Explanatin of necessary input data and the machine output is included.

Report presenting a statistical study of the values of wing-lift factor at the instant of ground contact for four transport airplanes. Frequency-distribution curves and probability curves were fitted to the samples of data obtained from each of the transport airplanes.

Report discussing the stratigraphy of the Morrison Formation in northwestern New Mexico. From Introduction: "The field work on which this report is based was done during the summer of 1954 when the authors were engaged in investigating the uranium resources of northwestern New Mexico..."

Note presenting an analysis of the normal accelerations and operating conditions encountered by two different airmail helicopters and a military pilot-training helicopter. The results indicate that maneuvers are usually responsible for the relatively large accelerations encountered, whereas gusts contribute primarily to the large number of smaller accelerations and the corresponding increase in the amount of time spent in the accelerated state. Results regarding operating conditions, gust and maneuver loads, take-off and climb, en route, landing approach, landing loads, operating variables, and acceleration frequency of occurrence are provided.

A tank investigation was made of the hydrodynamic characteristics of a 1/13.33-scale jet-powered dynamic model of the 160,000-pound Martin XP6M-1 flying boat. Longitudinal stability during take-off and landing, resistance of the complete model, spray characteristics, flap loads, and effect of sinking speed in smooth and rough water are presented, as well as behavior during taxiing, take-off and landing in rough water. The effect on spray of two bows and several bow-spray-strip modifications and the effect on resistance of afterbody chine strips also are presented.

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification;Constitutionality of House Bill 290,54th Legislature.

Monthly magazine discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.

Monthly journal about library issues in Texas including collection development, programming and activities, managements, and other topics of interest.

The Griffith crack theory is reviewed and certain shortcomings of this theory are discussed. A new description for the shape of a crack is given which takes into account the atomic structure of material. Through consideration of the total energy of the system and the shape of the crack, expressions for crack behavior are derived which are considered to remedy the defects of the Griffith theory.

Report presenting the description and characteristics of two small temperature recorders suitable for flight use. One recorder is an electro-mechanical followup, self-balancing potentiometer type and one obtains self-balance by using an electronic feedback amplifier.

From Summary: "Trajectories of water droplets about an ellipsoid of revolution with a fineness ratio of 10 (10 percent thick) in flight through a droplet field were computed with the aid of a differential analyzer. Analyses of these trajectories indicate that the local concentration of liquid water at various points about an ellipsoid varies considerably and under some conditions may be several times the free-stream concentration. Curves of the local concentration factor as a function of spatial position were obtained and are presented in terms of dimensionless parameters that describe flight and atmospheric conditions."