Years 



21 



12 X 1° 15 

 1 2.2 = 1412 ; lo.i5;:i2i— ^-^-==0°971 of Reaumur for 



12'. of the barometer. 



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

 Popayan. Barometer 20' 9'. 1. B. W. 73°.5. 



Barometer in Popayan 22^ 111.2 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 — 26.T~=0°-^®^ of Reaumur, for 12 



lines of the barometer, 



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

 eter 191 61.5. B. W. 72°. 4. 



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



on Sombreros 19 9.05. B. W. 72 .40 



Differences 3 5.15. 3 .25 



..11 i=r ono^ 12x3^.25 



41U5 : 3°.25; :—jj-^^- =0.947 for 12 lines barometer. 



I ascended the hill of Tambores : barometer 18' IT 6 B W 



71°.75. 



Barometer in Popayan 22' 111.2. B. W. 75° 65 



on Tambores 18 11.6, B. W. 71 .75 



Differences 3 11 .6. - 3 .90 



12x3.9 



471.6 : 30.9: : 12 "47^=0.983 for l^i barometer. 



90 



Proof that above j^ of Reaumur is the true exponent 



inch of the barometer. 



I then proceeded to take the observations of Las Juntas and 

 "ombreros, 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 



26.95 : 20.2 :: 12 ^^ g,- =0^.979 Reaumur for 12 lines of the 



barometer. 



