388 



observations carefully calculated, is, at La Guay- 

 ra, nearly 28*1° ; at Cumana, 27*7° ; at Vera Cruz, 

 25*4° ; at the Havannah, 25*6° ; at Rio Janeiro, 

 23*5° ; at Santa Cruz in Teneriffe, in the latitude 

 of 28° 28', but backed, like La Guayra, by a wall 

 of rocks, 21-9°; at Cairo, 22-4°; at Rome, 15*8°. 



From the whole of these observations * it 

 follows, that La Guayra is one of the hottest 



* The following are the horary variations of the barometer 

 in Paris lines, with the heights of the centigrade thermo- 

 meter and of the whalebone hygrometer of Deluc, as I 

 observed them from the 23d to the 25th of January, at the 

 port of La Guayra. 



Day 



Hour 



Baroni. 



Therm. 



Hygrom. 



51-0° star light, fine. 



23d 



11 even. 



337*2° 



23-6° 



24 



4 morn. 336 7 



231 



524 





n 



337*5 



23-9 



45-3 





9 



337*7 



24-3 



425 





10 



337*6 



25-6 



42-3 





12 



3371 



262 



4 5* 2 sky misty. 





2§ aftern. 336 4 



26*4 



45-8 







336-3 



26*2 



46*3 





H 



336*6 



23-7 



470 





9 



3371 



24-3 



53 2 clouds. 





111 



336-8 



23-7 



52-4 



25 



7 morn. 



3370 



225 



51*2 serene, azure sky. 





8 



337 3 



23-5 



50 3 



The observations of temperature corresponding to mine 

 gave for Cumana, the 23d of January at eleven at night, 

 26-6° ; the 24th of January, half after two in the afternoon, 

 28-2° ; at eleven in the evening, 26*5° j the 26th of January 

 at seven in the morning, 25*5°. 



