Fig. 114. 



6 a.m. 



Noon 



6 p.m. 



Fig. 115. 



Fig. 114 — Typical afternoon cloud composition at Santa Ana during the dry season. 



Fig. 115 — Temperature curve for Abancay drawn from data obtained by hourly 

 readings on September 27, 1911. Dry bulb readings are shown by a heavy solid 

 line, wet bulb readings by a dotted line. The heavy broken line shows the normal 

 curve when the sky is unobscured by cloud. The reduction in temperature with cloud 

 is very marked. 



