this book, any book, should be read with an open mind. And yet, no biography can be entirely objective, especially so if the biographer is the son. Jesus said, Judge not, that ye be not judged. In retrospect, looking back to an era we would hope never to experience, its the least we should do. My father was an unusual man, destined it seems, to lead an unusual life in unusual times; a life filled with conviction, courage, insight, compassion, invention, creativity and tragedy. My father, a passable storyteller, often did not tell all he knew. But as time passes, there is a fine sifting of evidence and plausibility, and what remains in the end is our imperfect memory of the man we knew. This is really his story, not mine, and I only hope my retelling is at least close to the way he might have written it. If the story seems to have some elements of a mystery, it is probably no accident. Dad was often a mystery to us, to his friends. He spoke epigrammatically. And he was a man who talked the talk, and walked the walk. I have had the good fortune to know several famous and not so famous persons in my life, persons of high creative intelligence, compassion and integrity; Dad belongs with them.

This preliminary report will outline the flooding and drainage problems encountered in the area adjacent to Pipestone Creek and Oak Lake.

The measurements of pressure fluctuations in a continuous-flow, hypersonic wind tunnel at Mach number 8.08 are described. The prime objective of the measurements was to determine amplitudes and frequencies of the various components of pressure fluctuation and to establish the accuracy with which such measurements might be made. A description of the measurement apparatus, its mode of use, and a sampling of typical pressure fluctuation measurements are presented. Merit factors, providing convenient numerical descriptions of such pressure fluctuations as were encountered, are defined. The test results were used in the assignment of values to these merit figures. Limited accuracy among the test results indicates the need for a dynamic pressure calibration apparatus of wide frequency and amplitude capability. The method used in calibrating the data readout equipment is presented. A treatise on the response of analog readout instruments to input signals representable by time-varying function is also presented. (Author).

An experimental investigation of laminar boundary-layer separation induced by a trailing edge ramp on a flat plate was conducted at Mach numbers of 6, 8, and 10. The tests were conducted over a range of Reynolds numbers. Longitudinal and spanwise surface pressure distributions, pitot pressure profiles, and shadowgraph pictures were used to investigate the two-dimensionality of the flow and the effects of model geometry, angle of attack, Reynolds number, ramp angle, and mass removal from the separation region. Data are presented to show that laminar, two-dimensional boundary-layer reattachment, not limited by model geometry, was obtained. These data are compared to the integral-moment theory of Lees and Reeves as modified by Klineberg. It is also shown that a separation region can be reduced or even eliminated by removing mass at the hinge line. (Author).