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 



Barom. 



Therm. 



Hygrom. 



51-0° star light, fine. 



23d 



11 even. 



3372° 



23-6° 



24 



4 morn. 336 7 



231 



52 4 





n 



3375 



239 



45-3 





9 



3377 



24-3 



425 





10 



337*6 



256 



42-3 





12 



3371 



26*2 



4 5' 2 sky misty. 





2J aftern. 336*4 



26-4 



45-8 







336-3 



26-2 



46-3 





H 



3366 



23-7 



470 





9 



3371 



24-3 



53 2 clouds. 





Hi 



336-8 



23-7 



524 



25 



7 morn. 



3370 



225 



51'2 serene, azure sky. 





8 



337*3 



235 



50 3 



The observations of temperature corresponding to mine 

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

 26-6° 5 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°. 



