ADIABATIC CHANGES OF MOIST AIR NEUHOFF 



457 



In order now to show how the computation of the pseudo-adiabat 

 differs from that of the adiabat,.as to its results, and in order to 

 distinguish as to the admissibility of one or the other boundary- 

 limits on the basis of an accurate computation we have computed 

 the adiabat of 20 C. and 76o mm , for saturated ascending air. 



Table A. Computation of the pseudo-adiabat for saturated ascending air 

 for the initial temperature 20° C. and pressure y6o mm 



The preceding table (A) shows at once how this kind of computa- 

 tion is best executed; each new condition is computed from the 

 data given by the preceding one. 



Column 1 contains the temperatures, column 2 the quantities of 

 moisture {%) for the average temperature of the interval after the 

 condensation water has fallen away. The values for this column are 

 taken from table 1, and in doing so. approximately estimated 

 values of the pressure are used. For each value of x we seek the 

 corresponding value of m in table 4 and enter it in the 3d column 

 of table A. We have here to distinguish between temperatures 

 above o° C. for which we use the value m n of the rain stage and 

 temperatures below o° C. for which we use the value m lv of the snow 

 stage. Columns 4 and 5 give the values of log T and the dif- 



