474 



METEOROLOGY. 



Month. 



January .. 

 February . 



March 



April 



May 



June 



July 



Aug:ust ... 

 September 

 October... 

 November. 

 December. 



Mean tem- 

 perature. 



Mean at- 

 mos. pre.s. 



luck 

 26. 

 2G. 

 '2<i. 

 2G. 

 2(i. 

 26. 

 20, 

 26. 

 26. 

 2G. 

 26. 

 26. 



es. 



9(;o 



971 

 954 

 964 

 9H4 

 97.^) 

 980 

 964 

 956 

 946 

 933 

 959 



Humidity, 

 Saussure's 



71.64 

 66. W 



73.10 

 68. 00 

 68.65 



72. 80 

 75.90 

 76.40 

 76.90 

 76. 50 



73. 85 



Amount of 



rain.* 



Indies. 

 U. 158 

 0. 000 

 0.670 

 3. 349 

 0. 473 



3. 664 



4. 4.^)2 

 4.373 

 8.116 

 5.595 

 8.791 

 0. 083 



* In French inches. 



The correct mean annual temperaturet is therefore 71°.71, and the mean 

 annual l)arometric pressure 26^". 963 ; the average degree of humidity 72°. 70, and 

 the total amount of rain in 1860, 34.724 inches. The following diagrams show 

 the annual march of the temperature and harometric pressure, as observed in 

 1860: 



Monthly mean temperature at Caracas in 1860. 



Montlilij mean barometer pressure at Caracas in ISGO. 



Inches. 



t See Appt'uihx B. 



