114 



Disturbances of the barometrio pressure beyond the diumal oscilla- 

 tions are rare, readings remaining constant for many -weeks at a time. 



The air is extremely dry; steel articles left on the ground every night 

 do not rust, and no dew is deposited, notwithstanding the olear sky, ex- 

 cept at the bottom of ravines. 



Sumary of Temperatures in different places during 

 February, March, and April. 



