BAROMETRICAL MEASUREMENT OF HEIGHTS. BAILY. 



Example. 



Thermometer in open air, 

 Attached Thermometer, 

 Barometer, 

 Latitude of the place 



• B =: 0.00031 



log ^' = L37401 



1.37432 



log /3 = 1.47784 



D r= 0.10352 



Upper Station. Lower Station. 



t' = 70.4, t = 77.6. 



t' = 70.4, T = 77.6. 



/3' = 23.66 inches, ^ = 30.05 inches. 



cp = 21°. 



log D = 9.01502 



C = 0.00087 



A = 4.81940 



3^83529 



= 6843.7 English feet. 



D 



71 



