One of the acceptable theories in describing the wave motions in fluid saturated porous rocks is Biot's theory2 In this paper, we present the procedures in the determination of the parameters in Biot's theory. One artificial rock “Alundum’ and three types of natural sandstones were tested. The calculated wave speeds in the rock specimens, based on the experimentally determined Biot's parameters, were found in good agreement with the measured dilatational wave speeds using the ultrasonic pulse method