The thermal conductivity of liquid He* at pressures of 0.11, 6.78, and 27.0 atm has been measured down to 0.06°K. For each pressure the conductivity passes through a minimum, the temperature of the minimum decreasing with increasing pressure. At temperatures greater than J°K the thermal conductivity is nearly independent of pressure. The effect of pressure is to decrease the conductivity. The pressure effect increases monotonically down to the lowest temperature.
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