^ = Difference in degrees Fahrenheit 

 between the standard temperature 

 and the temperature of test 

 measurement, taken as positive 

 in value when the test tempera- 

 ture exceeds the standard, jmd 

 as negative in value when the 

 test temperature is below the 

 standard 



In the present work, 50° F was used on 

 the standard temperature. By use of the 



above formula, the values given in table 3 

 were calculated. 



Another correction necessitated by the 

 use of the salt solution is that of "diffu- 

 sion" or "bleeding" caused by the loss of 

 salt in still water exclusive of diffusion 

 from the outside influence of seepage action. 

 The influence of bleeding as recorded by 

 resistance increase is obtained by running 

 the test in conditions of zero velocity in 

 the flume in the laboratory. 



Table 3» — Resistance coefficients for correction 



to 50°F 



