t = local temperature T u = local axial velocity U = dimensionless velocity, u/Uc U,,, = average fluid velocity in axial direction U , U,,,,, = maximum local velocity in axial direction a = disturbance wave number fl p = liquid viscosity p = liquiddensity c w = dimensionless temperature, t,t/t,tc = fluid velocity at pipe center in axial direction = coefficient of volumetric expansion= quantity evaluated at R = 0 = quantityevaluatedat R = 1 A Burnett type of apparatus was built for 12,000 Ib./sq.in. pressure and temperatures of 25" to 100°C. Isothermal expansions were run on methane, ethylene, and four binary mixtures a t 25", 50°, and 75"C., and compressibility factors were derived from the pressure ratio R. C. Lee is presently at

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This paper reconstructs the function argument of Aristotle’s Eudemian Ethics 2.1. The argument (1) seeks to define happiness through the method of division; (2) shows that the highest good is better than all four of the goods of the soul, not only two, as commentators have thought; and (3) unlike the Nicomachean argument, makes the highest good definitionally independent of the human function.