APPENDIX TO METEOROLOGICAL AND HYDROGRAPHIC TABLES. 



13c 



Table 13 A. \~irtital temperature of saturated air in degrees Fahrenheit, the height being given in 



dynamic meters. 



Example: 



Height, 3191 dynamic meters, temperature 40. 9 F. Table 13 a gives 2.5. 



88 per cent of 2.5 gives 2.2 F. 



Virtual temperature 43-* F. for air of 41. 9 F. and 8S per cent relative humidity at 



the height of 3191 dynamic meters. 



