Fkd.Maa.Ser A. Vol.ZS.fl.l. 



INCREASE OF TEMPERATURE DOWNWARDS IN THE EARTH. 



Br = x 



|P = area ONPA^a= -£f*y d.v 



cl = 2 VKb 



dv . = V. 3J p' 



dx a HVW 



■Ixb -2xb -3xb -4xb -ixb -6xb -?xb -8xb -9 xb 



biv^n 

 Y 



7000 'Fahr. 



