662 



the banks of Rio Guayre 406 t., while (if there 

 is no incorrectness of cyphers in my journal) I 

 found the height 414 t. nearlaNoria (See above, 

 Vol. in, p. 449). In this uncertainty respecting 

 the partial results, I have confined myself to the 

 indication in the preceding table, for the town 

 of Caraccas, of the level of the street of Carabo- 

 bo. The agreement of my observations with 

 those of MM. Rivero and Boussingault, in- the 

 vallies of Aragua, is very satisfactory, for the 

 latitudes, as well as for the heights. 



Observations made to verify the progress of the 

 horary variations of the barometer in the tro- 

 pics, from the level of the sea, to the ridge of 

 the Cordillera of the Andes, 



The results of M. Bonpland's observations 

 and mine on the small atmospheric tides, during 

 our stay at Cumana, Caraccas, in the steppes of 

 Calabozo, and amidst the forests of the Oroo- 

 noko, were published in 1800 and 1801, by 

 M. de Lalande, to whom I had communicated 

 them successively. I flatter myself that this 

 labor has greatly contributed to fix the atten- 

 tion of naturalists in Europe on a very curious 

 phenomenon, of which the cause is not yet 

 completely ascertained. The regularity of the 

 horary variations of the barometer, in the torrid 



