INDEX. 



' Page. 



Africa, olive culture 10, 13, 21-22, 37, 38, 41, 42,44 



Algeria, factors relating to olive culture 13, 37, 38 



Almond, behavior under arid conditions 15-16, 56 



Altitude, relation to olive culture 10, 17, 19, 35-36 



Appendix, anatomical structure of the olive 47-53 



Apricot, cultivated, behavior under arid conditions 13, 15, 17, 18, 23, 42-43, 56 



wild, adaptation to arid conditions 24 



Arizona, climatic records 11-12, 36, 37-40, 50 



olive culture 10, 17, 30, 33, 36-38, 39, 42 



Asb, Arizona, behavior under arid conditions 13 



Beaumont, Cal., dry-land olive culture 17, 31 



Benson, Ariz., climatic record 36 



Black scale. See Insects. 



Boerne, Tex., altitude and temperatures 35 



Bogart-Degolia olive grove. See Olive, abandoned grove at Casa Grande. 

 California Agricultural Experiment Station. See Soils, tests in California. 



olive culture 10,17-27,29^3 



State Board of Horticulture, report 34, 35, 36, 41 



Caruso, G., on effect of temperature on the olive 37, 39, 40 



Casa Grande, Ariz., dry-land olive culture 10-13, 15, 16, 20-23, 56 



Cercidium torreyanum, adaptation to arid conditions 24 



Chatsworth, Cal., dry-land olive culture 31 



Chemlali olive. See Olive, varieties. 



Chilopsis, adaptation to arid conditions 24 



Climate, relation to olive culture. . 9, 10-13, 16, 18-19, 24-25, 31-32, 34-42,43-44, 50, 53 



Cline, Ariz., climatic record 36 



Colorado Desert, possibility of olive growing 38 



Columbella olive. See Olive, varieties. 



Columbia, Ariz., climatic record 36 



Congress, Ariz., climatic record 36 



Cottonwood, behavior under arid conditions 18, 25-26 



Covillea tridenta, natural desert growth 18 



Creosote bush. See Covillea tridenta. 



Culture and neglect, contrast of effects 33, 56 



Dalea spinosa, adaptation to arid conditions 24 



Distance of planting. See Olive, trees, spacing in orchard. 



Drought, power of resistance, factors of investigation 9-10, 43 



Dry-land olive grove, abandoned. See Olive, abandoned grove. 



Dudleyville, Ariz., climatic record 36 



Emplectocladus, subgeneric name of wild apricot 24 



Environment, effect upon modifications of structure 30, 43, 47-53 



192 57 



