BAROMETRICAL MEASUREMENT OF HEIGHTS. BAILY. 



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EXAMPLE. 



Upper Station 



Thermometer in open air, t' = 70.4, 

 Attached Thermometer, 

 Barometer, 

 Latitude of the place 



B = 0.00031 



log ft 1 = L37401 



1.37432 



log = 1.47784 

 D = 0.10352 



Lower Station. 



z 77.6. 



= 70.4, T = 77.6. 



= 23.66 inches, /3 = 30.05 inches. 

 = 21. 



log D 9.01502 

 C = 0.00087 

 A = 4.81940 



3.83529 

 = 6843.7 English feet. 



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