Colombia between the Years 1820 and 1830. 21 



12 X P. 15 

 1 2.2=141.2: l°.15::12i — ^j^ — = 0^.971 of Reaumur for 



12^. of the barometer. 



I ascended to Paisbamba, a small farm five leagues south of 

 Popayan. Barometer 20^ 9i.l. B. W. 73°.5. 



Barometer in Popayan 22^ 11^.2 B. W. 7 5°. 65 

 in Paisbamba 20 9.1 B. W. 73 .50 



Differences 2 2.1 2° 15 



12 X 2 15 

 2 2.1=26U : 2<^.15: :12 — 26r~^^°^^^ °^ Reaumur, for 12 



lines of the barometer. 



I ascended a hill E. of Paisbamba called Sombreros. Barom- 

 eter 19i. 615. B. W. 72°.4. 



Barometer in Popayan 22i 111.20. B. W. 75°. 65 

 on Sombreros 19 9 .05. B. W. 72 .40 



Differences 3 5.15. 3 .25 



12 x3° 25 

 411. 15 . 30 25 : : —^^-L— =0.947 for 12 lines barometer. 



I ascended the hill of Tambores : barometer 18* 111. 6. ^ \y'. 

 71°.75. 



Barometer in Popayan 22^ 111.2. B. W. 75^.65 



on Tambores 18 11.6. B. W. 71 J5 



Differences 3 11 .6. 3 .90 



12 x3 9 

 471.6 : 3°.9: :12 ^^^ =0.983 for 12i barometer. 



9° 

 Proof that above tt; of Reaumur is the true exponent of one 



inch of the barometer. 



I then proceeded to take the observations of Las Juntas and 

 Sombreros, and calculating the exponent anew. 



Barometer in Las Juntas 21 9 B. W. 74.60 

 in Sombreros 19 6.05 72.40 



Differences 2 2.95 2.2 



12x2.2 



.2:: 12 



barometer. 



^6.95 : 2°.2: :12 ^^ ^^ =0°.979 Reaumur for 12 lines of the 



