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BELL SYSTEM TECHNICAL JOURNAL 



introduced by leakage, they pumped the gas out of the siHca bulb 

 and the silver at the end of each experiment, collected it, and deter- 

 mined its quantity. If the amount of gas collected after an experiment 

 was not substantially the same as the amount introduced originally, 

 the experiment was discarded. 



Data relative to the solubility of oxygen in silver are given in 

 Table I. The solubility can be seen to be proportional to the square 

 root of the oxygen pressure, except for pressures below 10 cms. when 

 the temperature is below 600° C. Here a marked divergence from 

 the square root law appears, which might be explained by assuming 

 that these measurements were made before equilibrium was established. 



> .10 



.05 



100 



200 



300 400 500 600 700 



TEMPERATURE IN DEGREES CENTIGRADE 



Fig. 1 — Solubility of oxygen in silver as a function of temperature with pressure as 

 a parameter (Steacie and Johnson). 



These data are plotted, in Fig. 1, to show the variation of solubility 

 with temperature, giving pressure as a parameter. 



The curves of Fig. 1 differ from those for other systems in that a 

 minimum point occurs at about 400° C. It would be logical to 

 explain this minimum as an adsorption effect, but Steacie and Johnson 



