Table 58. 

 DETERMINATION OF HEICHTS BY THE BAROMETER. 



METRIC MEASURES. 

 Temperature correction factor, a = .00367 6. 



Multiply approximate altitudes, determined from table 56 or 57. by values of a corresponding to 

 mean temperature, 0, of air column. Add, if 6 is above o° C; subtract, if below o° C. 



Smithsonian Tables. 



147 



