THE HYDROSTATIC PROBLEM FOR THE ATMOSPHERE. 



77 



virtual temperature for saturated air. The annexed table L shows how these 

 divisions should be drawn in uninterrupted succession on those horizontal lines 

 which in the diagram represent standard pressures. Table M shows how the cor- 

 responding divisions should be drawn on those horizontal lines which in the 

 diagram represent standard heights. 



Pressure 

 mrbars 



200 



300 



wo 



500 



600 



TOO 



BOO 



900 



WOO 



JtOO 



l M\\ 



11 



--^i 



M 



i| i - 1 ' ' r 



tft~ 



n 



% 



lii 



|l|i l lll l llil n l|l|i|l| Mrn illi' I l|l l| l 1 1 \ i >l 



?.m 



!S* 



EeigM 

 dyn.meters 



10OOO 

 9000 



8000 



7000 



6000 



sooo 

 woo 



3000 



iooo 



1000 



50 



10 



20 30 



-40 SO 20 10 



Temperature C. 

 Fig. 7. Virtual-temperature diagram with common pressure-scale and with virtual-temperature divisions. 



In both tables the figures give the distances of the points of division from that 

 ordinate, which in the diagram represents o C. They are found by a simple process 

 of summation of the numbers contained in the tables of virtual temperature, 

 respectively 7 m and 8 m. Examples of these divisions taken from table L and 

 introduced on the lines representing standard pressures are shown in fig. 7 as well 

 as in several of the following diagrams. 



