22 Meteorological Observations made in 



Barometer in Paisbamba 20 9.1. B. W. 73^.50 

 in Tambores 18 11.6. 71 .75 



Differences 1 9.5 1°.75 



12xl°.7 

 1.9.5=211.5 : 10.75:: 12 -^^y- =0°.976 of Reaumur for 12 



lines of barometer. 



The mean of the six quotients is 0.974, which may be assumed 

 as the exact exponent of 12 Unes of the barometer. 



Given then the heat of boiling water in any place to find the 

 corresponding elevation of the barometer, and cojisequently its 

 height above the sea. 



As 0°.974 : 12 Unes, so is the difference of the heat of B. W. 

 To ascertain at Popayan the number of inches, Unes, &c. of the 

 barometer. Ex. in Tambores, B. W. 71°. 15, to find the corres- 

 ponding height of the barometer. 



B. W. in Popayan 75°. 65 

 in Tambores 71 .75 



3 .90 



3 9y 12 

 0.974 : 12 : : \^^ =48^.05 = 4.0.05. 



As Tambores is above Popayan, deduct this quantity from the 

 height of the barometer in that city. 



Barometer in Popayan 22 11.20 

 Deduct 4 00.05 



Remain 18 11.15 ht. of bar. in Tambores. 

 Barometrical height observed 18 11.60 

 Do. by calculation of B.W. 18 11.15 



Difference 45 



a result as exact as can be desired. 



Upon this principle I calculated the elevation of the following 



eleven places : 



Popayan, Poblason, 



Juntas, Buenavista, 



Paisbamba, Hevradura, 



Sombreros, Pasto, 



Tambores, Quito. 



Estrellas, Me?Jioiia, ^'c. p. 13. et seq. 



