148 THE DATE PALM. 



Page. 



Date, culture, profits (sec also Date growing) 136-138 



regions of United States of probable success 122-125 



(fruit), description 17 



garden, cooperative at Tempe, Ariz 42, 128 



experimental at Mecca, Cal 110 



gardens, sunken, of Souf country, Sahara, remarks 69 



growing, care of tree, pollination, gathering, curing, and packing dates. . . 25-30 



in United States, types and varieties of dates suitable 30-44 



season, water supply in Salton Basin 105 



thinning of bunches on tree (see also Date culture) 28 



palm, alkali resistance, discussion 115-121 



amount of water necessary in irrigation 44 



and dates, care, discussion *. 25-30 



general remarks on conditions in United States 11-13 



areas in Salton Basin for growing 110 



as shelter for other fruit trees 43 



destruction by rain at Moorzook, Fezzan, Sahara 118 



drainage, discussion . . ., 50-52 



effect of excess of alkali 79, 83, 116, 120 



effects of atmospheric humidity and rain, discussion 52-58 



wind, discussion 70-72 



heat requirements, discussion 58-70 



irrigation, discussion 44-50 



necessity of sunshine, and heat requirements 58 



offshoots, successful shipment 20-21 



propagation 18-25 



resistance to alkali 72-121 



usefulness and botanical characters, etc 14-17 



plantations on alkaline soils, subsidiary cultures 115 



variation of heat requirement for different sorts 63 



varieties for cultivation in Arizona 32, 128, 129 



Dates, early sorts from Sahara for United States 32 



finest grades, shortness of supply 138 



gathenng, caring, and packing 29-30 



of commerce, varieties, remarks 38 



importance for United States, names and notes 39, 40 



ordinary, probable success of culture; summary 132, 142 



Persian Gulf, importation into United States, note 132 



promising varieties introduced into United States 37 



Saharan, importation into United States 41 



soft and dry, notes 20 



types, three, remarks 30-31 



De Candolle, statement of lowest temperature for date palm 63 



Death Valley, date culture, chances of success 122 



Deglet Noor date, certainty of ripening in Salton Basin 67 



derivation of name 36 



disease, Boussaafa 116 



high quality, summary 33, 141 



notes. 30, 41, 58, 63, 68, 69, 70, 89, 110, 116, 122, 123, 128, 133, 136, 137 

 quality, grades, prices, yield, requirements in growing, etc. . 33-36 



Salt River Valley, for growing 128 



Salton Basin, for growing 67 



shortness of supply. 138 



yield, prices and profits 136 



Desert regions, records of rainfall (see also Sahara, etc. ) 57 



Disease, date palm, from alkali 116 



' ' Merd el Ghram ' ' due to bad drainage 120 



freedom of date palm 137 



Distances between trees in planting dates 22 



Drainage, bad, cause of disease in date palm 120 



connection with irrigation in Sahara 78, 86 



for the date palm, discussion 50-52 



in Colorado Valley, necessity except in date culture 131 



use in Salton Basin in date culture, note .' . 110 



value in alkali lands for date culture, note 73 



w r ater from alkaline soils, irrigation of date in Sahara 98 



"Dry dates," description 31 



