378 



As we advanced into the southern part of the 

 Llanos, we found the ground more dusty, more 

 destitute of herbage, and more cracked by the 

 effect of long drought. The palm-trees disap- 

 peared by degrees. The thermometer kept, 

 from eleven in the morning till sunset, at 34° 

 or 35°. The more the air appeared calm at 



vol. i, p. 212 — 215. The magnetic dip at Calabozo was 

 38-7" cent. div. The needle oscillated two hundred and 

 twenty-two times in ten minutes, or ten oscillations less than 

 at Caraccas. I obtained for the magnetic variation on the 

 18th of March, 1800, 4° 54' 10" N. E. The elevation of 

 Calabozo above the level of the sea is 53 toises. (The Nivel- 

 hment Barometrique indicates by mistake 94 toises. In the 

 Journal was entered " Bar. 333'7', but 40 feet above the 

 Rio Guarico." The feet were taken for toises.) I give here 

 the following observations, for the most part not yet pub- 

 lished. At the Hacienda de Cura my barometer indicated 

 at 5 h (therm, cent. 27'6°) 320- 5 1 : at Guacara, at 10 h (th. 

 26°) 3215' : at Nueva Valencia, at 14 h (th. 26 4 e ) 320 4' : 

 at Guigue, at 2 h (th. 30 3°) 32I-2 1 : at Villa de Cura, at 6 h 

 (th. 26 3°) 317 6 1 : at San Juan, at l h (th,25-2°) 3228 1 : at 

 Parapara, at 23 h (th. 27*2°) 3315 1 : at Cayman, in the Llano, 

 at 14 h (th. 28 3°) 333-3' : at Calabozo, five toises above the 

 river Guarico, at 23 h (th. 31*2°) 333 7 1 : at St. Geronimo 

 del Guayaval, at 21 h (th. 32°) three toises above the Rio 

 Guarico, 336*4* : at San Fernando de Apure, five toises 

 above the level of the waters of the Apure, at 23 h (th. 31*4° ) 

 3356 1 . These numbers give differences of relative height. 

 The correction of the basin of the barometer has not been 

 made to reduce the barometer to the level of the sea, 337 8 1 . 

 For the absolute heights consult my Qbs, Ast. 7 vol. i, p. 297 

 and 367. 



