102 



BRIDGMAN. 



figures in parentheses in the table were omitted in taking the average, 

 as evidently they are affected by some large error. 



Of these measurements the best was the second run with the first 

 specimen with the 0.007" central hole. It is indeed to be expected 

 that this manner of mounting the specimen would give the best re- 

 sults. The individual readings of this run are reproduced in Figure 4. 



4 5 6 7 



Pressure. Kg./Cm.'X 10' 



Lead 



10 



Figure 4. Lead. Thermal conductivity on an arbitrary scale against 

 pressure in thousands of kg/cm^. These results were obtained with a radial 

 flow specimen. 



The first of the two sets by the longitudinal flow method comes next in 

 order of consistency, the individual points of this run lying even 

 more nearly on a smooth curve than those shown in Figure 4, except 

 for the initial point at atmospheric pressure, which lay off the curve 

 by a large amount. The readings on the second longitudinal sample 

 were not good for some unknown reason; possibly there may have 



