624 



Index to Volume IX 



on the Yuma Mesa. 89: 246-257; 

 1919: 441; 1921: 588. 

 characteristics of fruit. 89: 249-254, 

 cover crops in orchard. 89: 246-249; 



1919: 441. 

 fertiHzing. 89: 249. 

 nursery stock. 1920: 474. 

 plantings. 89: 246-249; 1921: 587. 

 varieties. 1921: 587-588. 

 Citrus nobilis. 1920: 473. 

 C. sinensis. 1920: 473. 

 C. Wcbberii. 1920: 473. 

 Clark, Carl. 1921: 552, 564. 

 Clark, S. P. Cir. 34; Cir. 36; 1920: 

 432, 440-448; 1921: 552, 553, 563- 

 572. 



Clay: 



effect of, on transpiration ratio. 88: 

 1921: 559. 

 Cliflf rose, or quinine bush (Cowania 

 Stansburiana) : 

 as a browse plant. 1921: 577, 578. 



Climate : 



effect of, on transpiration ratio. 88: 



208. 

 of the Salt River Valley. 85: 9-11. 

 of the Yuma Mesa. 89: 227-233, 263. 

 Cloaca Maxima, a sewer of old Rome. 



86: 140. 

 Clothier, R. W. 1920: 431. 

 Clover: 



alsike. Cir. 40. 

 crimson. Cir, 40. 

 seed testing. Cir. 40. 

 sour (Melilotus indica) : 



as a cover crop. Cir. 34; 94: 507; 

 1918: 308; 1921: 588. 

 SWEET, IN ARIZONA. Cir. 34. 

 annual white. Cir. 34. 

 biennian white. Cir. 34. 

 biennial yellow. Cir. 34. 

 Hubam. Cir. 34. 

 Coachella Valley: 



irrigable lands in. 95: 530. 

 Coal oil spray for brown cotton bug. 



87: 194. 

 Cocklebur : 



sale of seed forbidden. Cir. 40. 

 Code, State Water: 

 need for. 1918: 351-352. 

 passed. 1919: 451-452. 

 Code, W. E. 86: 75;1919: 401, 447-455; 

 1920: 433, 469-474; 1921: 554, 

 597-600. 

 CoUards. 1918: 310. 



Colletotriclittin lagcncivuiu : 

 causing anthracnose of melons. 1921; 

 611. 

 CoUingwood, C. B. 89: 225, 235. 

 Collins, J. H. 85: 5-68; 1918: 282. 

 Colorado: 

 partly in the Colorado River Basin. 



95: 529-530. 

 reservoir sites in. 95: 533, 534. 

 Colorado River Commission. 95: 542. 

 COLORADO RIVER, THE, AND 

 ARIZONA'S INTEREST IN 

 ITS DEVELOPMENT. 95: 529- 

 546. 

 Arizona's program. 95: 542-546. 

 geography and irrigable lands. 95: 



529-530. 

 Gila River System. 95: 545-546. 

 navigabilitv of the Colorado River. 



95: 542. 

 objects sought. 95: 536-538. 



hydro-electric power. 95: 537-538. 

 storage for flood protection. 95: 536. 

 storage for irrigation. 95: 536-537. 

 proposed developments. 95: 538-540. 

 reservoir sites. 95: 533-536. 

 water rights. 95: 540-542. 

 water supply. 95: 530-533. 

 Colorado River water: 



plant food in. 89: 239. 

 Colorado rubber plant, or pingue: 



poisoning range sheep. 1918: 299. 

 Columella olive, the. 94: 520, 522. 

 Concrete: 



linings for irrigation ditches. 88: 212. 

 pipe ,wet-poured. 86: 93-95. 

 Continental Rubber Plantation: 

 cement pipe making at. 86: 97, 98. 

 pipe line structure at. 86: 146-147. 

 pipe line system at. 86: 148-150; 1918: 

 354-355. 

 Cook, W. M. 1920: 429. 

 Co-operative selling in Salt River Val- 

 ley. 85: 17-18. 

 Copper sulphate treatment for algae in 



water tanks. 1918: 299. 

 Cork Oak (Qiicrciis stiber): 



suited to Arizona conditions. 1919: 

 431; 1920: 461. 

 Corn : 

 as trap crop for cotton boll worm. 



87: 176. 

 bran: 



in feeding hogs. 1918: 325. 

 in poison bait. 1918: 336. 

 ear worm. 87: 175-178. 



