“…The tests are not connected with analysis of force decay, except as a means to an end. It has been previously observed [ 2,3] that if an applied force is measured during a temperature change, the sample being maintained at constant length, a change in slope occurs at Tg sufficient to determine Tg from the force measurement. Using' this device for determining T we propose to find a relation between T and volume compression f §r various elastomers.…”