INDEX. 149 



Page. 



Egypt, dates, notes '32,39,41,129 



irrigation by flooding, remarks 48 



Egyptians, ancient, cultivation of date, notes 17 



Electricity, use in soil investigations, notes 75, 79 



Evaporation, relation to irrigation of dates 46 



Exportation of dates, manner and importance 14 



Fairchild, D. G. , description of irrigation and drainage system 48 



observation of date soils on Persian Gulf 109 



packing dates on Persian Gulf 137 



opinion as to Bagdad, Khalas and Mozaty dates 37, 38, 40 



Fan palm in Salton Basin, fruit like date; alkali resistance Ill, 112 



Fard date, exports to United States, note 38 



Female flowers of date, description and method of pollination 27 



differences from male flowers 19 



Fig growing in California, reniarks 14 



under date palm 44 



Fischer, Th. , calculations of temperature for date flowering 64 



remarks on Mozaty date 37 



Flooding as method of irrigation, probable value in date growing 48 



Flower clusters of date, description and number 26-27 



Flowering of date palm, lateness as safety from frost (see also Blooming) 61 



lowest temperature limit 63 



Flowers and fruit of date, disastrous effect of rainy weather 54 



date, effect of pollination on value of fruit 28 



of date palm, male and female, growth; distinguishing marks 16, 19 



Forage crops with dates on alkali soils, notes 115 



Forbes, Prof. R. H. , experience with date palms in alkali soil 18, 21, 42 



observation on date palm roots 112 



ripening of dates, artificial, method 135 



Rhars date, observation 32 



study of water and irrigation 99, 105 



Fougala, Algeria, alkali in relation to date culture 78-84 



French, planting of date palm in the Sahara, notes 22 



Fritsch, G. , conclusion as to germination of date 19 



Frosts, escape of date by late flowering 61 



Fruit and flowers of date, disastrous effect of rainy weather 54 



date, heat required for maturing 65-70 



of date palm, need of dry air for proper development 52 



.trees, shelter of date palm 43 



Fruiting of date palm, effect of pollination on value of date 28 



lowest temperature limit 63 



necessity of high temperature 62-65 



Fruits for growing, with dates on alkali soils, notes 115 



Fukus date, note 39 



Gardens, date, experimental in Arizona and California 42, 110, 128 



sunken, of Souf, Sahara, description 69 



Gathering, packing, and curing dates 29-30 



Geography and geology of Salton Basin, California 101 



Geological Survey, estimate of irrigable lands on Colorado River 130 



Geology and geography of Salton Basin, California 101 



Germination of date palm (seed), need of water 19 



Gila Valley, Arizona, date culture, probable success, notes 126, 133 



Gypsum in Saharan soils, note 73 



solubility in soil moisture 74 



use in reclamation of black alkali lands 119 



Habitat, natural, of date palm, indications ' 19 



Malawi date, note 38 



Hamraya date, note 26, 37 



Hanlon date plantation, climatic peculiarities 50 



Hardpan, drainage in date lands 51, 78 



Hayani date, note 32 



Heat, amount required to mature date (see also Temperature) 65-70 



requirements of date palm, discussion 58-70 



History of date cultivation, remarks 17 



