Notes Journal of Medicinal Chemisny, 1972, Vol. 15, No. 3 333 recorded by physiograph. The test material was administered by ip in 5% acacia wspension at 2 dose levels, 50 and 100 mg/kg. The volume of injection was 1.5 ml at both dose levels. A control injection of acacia suspension was also done at this volume. Pressure levels were determined just prior to injection and at 15-min intervals following for a period of 105 min. Table I presents data ...