677 



Horary Variations observed at Mexico, and at Quito, 

 by M. de Humboldt. 



At Mexico, Nor. Lat. 19° 25 / 45"; height 1168 toises, in June 1803. 



26 at 8h 



+ 11 

 13 



— 16 



m 



+ 21 



m 



22 



22* 



23 



27 at 0£ 



— 4 



n 



25970 Th. 63oF. 

 259.87 



259.75 Th. 61° 

 259.40 



259.75 Th. 58.5° 



259.90 Th. 65° 



259.85 Th. 66° 

 259.68 



259.60 Th. 68° 



259.55 Th. 68.5° 



259.70 Th. 71° 



258.90 Th. 70° 



259.47 Th. 64° 



27 at ll h 



+ 12 

 13 

 — 16 

 + 20$ 

 21* 



m 



2 



H 



4 



11 



12 



— 34 3 



+ 



259.78 

 259.70 

 259.45 

 259.21 

 259.65 

 259.65 

 259.55 

 258.58 

 258.70 

 258.70 

 258.75 

 259.26 

 259.00 



Th. 62° 

 Th. 61° 

 Th. 59° 

 Th. 63« 



Th. 67° 

 Th. 73.5a 

 Th. 71° 



Th. 70° 

 Th. 67° 

 Th. 64° 



At Quito, South Lat. 0° 14'; height 1492 toises, in April 1802. 



4 at 20h 



244.00 



Th. 57° F. 



21 



244.32 



Th. 60° 



23 



244.25 



Th. 63° 



5 at 2 



244.15 



Th. 65° 



3 



244.15 



Th. 59° 



7 



243.60 



Th. 55° 



8* 



243,75 



Th. 54° 



10£ 



243.80 



Th. 52° 



12 



243.61 



Th. 51°.5 



20$ 



244.22 



Th. 58° 



22 



244.70 



Th. 67° 



6 at 0$ 



244.70 





3* 



244.70 



Th. 61o 



HoraryVariations at the Table- 

 land of Antisana, south lat. 

 0« 32 / 52" ; height, 2104 toises. 

 (Observations of M. He Humboldt), 



Mar. 16 at 4* 208.60 Th.8°R. 



8 208. 78 Th. 7.2« 



13 208.20 Th. 6° 



18 208.50 Th. 5.4° 



6 at 4|h 



244.61 



Th. 56° 



6 



244.25 



Th. 54° 



n 



244.15 





10 



244.10 



Th.47° 



19 



243.70 



Th. 45° 



20£ 



244.45 



Th . 63° 



22 



244.65 



Th. 66° 



22£ 

 7 at 2$ 



244.70 



Th. 67° 



244.70 





4 



244.65 



Th. 66.5° 



7 



244.65 



Th. 58° 



Hi 



244.J5 



Th. 52o 



12$ 



243.90 



Th. 53° 



The horary variations of Quito and 

 Antisana were observed in rainy wea- 

 ther. They are at that period less 

 sensible, and less regular than at 

 Mexico, and Santa Fe de Bogota. 



