DKY-LAND OLIVE CULTURE IN C'ALIFOKNIA. 



31 



SUCCESSFUL DRY-LAND OLIVE CULTURE IN CALIFORNIA. 



In contrast with the mere endurance test of wliich the preceding 

 examples are very instructive ilhistrations, there is in the so-called 

 ''inside" region of southern California, between the ocean and the 

 mountains, an ohve industry based on the local rainfall on lands above 

 canal lines or lacking a sufficient water supply. Excellent examples 

 of this type of ohve culture may be found in the neighborhood of 

 Beaumont, Riverside County; La Mirada, Orange County; Chats- 

 worth and San Fernando, Los Angeles County; in Santa Barbara 

 County; and also in the more northerly part of th(^ State near Oroville. 



Fig. 9. — Diagram showing the annual rainfall at Los Angeles, Cal., as presented in Table VI. 



While varying considerably in their climatic conditions they all 

 agree in these general features: A minimum temperature never below 

 20° and seldom lower than 28° or 30° F. ; a maximum summer temper- 

 ature of 105° in cooler seasons to 114° F. in extremely hot years, 

 but with a monthly mean temperature not below 48° in winter and 

 seldom exceeding 80° ¥. in summer. From a study of Table VI, 

 represented graphically in figure 9, we may see that the annual 

 rainfall at Los Angeles has exceeded 12 inches during more than half 

 of the years recorded, occasionally rising to 22 or 23 inches, or even 

 higher, and only in rare years of drought falling as low as 7^ inches, 

 with the minimum of 4.83 inches during the thirty years recorded. 



57054=— BuL 192—11 3 



