Air pressure micro-oscillations of the impulse-type (period: 10–25 seconds) as recorded by Macelwane Electromagnetic Microbarographs in a small tripartite arrangement at Florissant, Missouri (near Saint Louis) are propagated in the direction and with a speed that is of the same order of magnitude as the wind speed in the lower layers of the atmosphere but not necessarily at the surface.

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1 Instructor in Meteorology at Parks College of Aeronautical Technology of Saint Louis University.

2 Submitted as a contribution to a research project on atmospheric micro-oscillations and short period microseisms at the Institute of Technology; sponsored by Office of Naval Research under Contract Nonr 29600 NR. 082017. A portion of a Master's thesis.