CONTENTS 



VM'.Z 



Preface 



Geolnoy and Soils ^^^ 



Colorado Flatcaus Province ^9. 



Soils 500 



Water supply 9[:\; 



Arizona Highlands Region • ^^~ 



Climatology ■ ^03 



Temperature ^'•'l 



Atmospheric movements ^O^ 



Principal dry-farming regions ^14 



Little Colorado drainage area 514 



Valleys of Western Colorado Plateaus Province and Northern Arizona 



Highland Regions 518 



Lonesome and Little Chino Vallevs 518 



Big Chino Valley 521 



Auhrey Basin 5_1 



Tlualpai Valley '. 5— . 



Big Sandy Valley ^- — 



Detrital and Sacramento Valleys 523 



Valleys north of the Grand Canyon ^ • 523 



Pipe Springs Valley 523 



Short Creek Basin 525 



Antelope Valley 525 



Hurricane Valley 523 



Houserock Valley 525 



Kaihab Forest Reserve : 526 



Valleys of Southeastern Arizona 526 



Indian Agriculture in Arizona 530 



Tribes and their characteristics 530 



The Piman family 530 



The Yuman family 535 



The Athabascan family 535 



Home life of the Indians 53/ 



Farming by early white settlers 53/ 



Experimental work in drv- farming 540 



Snowflake Drv-farm 540 



Beans i. ■ ■ ■ 542 



Corn * 547 



Potatoes 553 



Small grains 557 



Sorglutms 560 



Miscellaneous crops 564 



Floodwater. summer fallow, and continuous cropping 566 



Moisture storage 570 



Prescott Drv-farm 570 



Alfalfa 571 



Beans 574 



Corn 578 



Fruit 583 



Potatoes 58:; 



Small grains 590 



Sorghums 596 



Miscellaneous crops 604 



Cultural practices for dry-farms • 605 



Silos and ensilage 60/ 



Sulphur Spring Valley Dry-farm 60S 



