644 



Index to Volume IX 



Texas Oil Company: 



tests of fuel oil from. 92: 410-412. 

 Thistles, noxious weeds: 

 Bull. Cir. 40. 

 Canadian (Cirsium arvense). Cir. 40; 



1920: 457. 

 Russian. Cir. 40. 

 Scotch. Cir. 40. 

 Thomas-Hammond pipe machine. 86: 



73, 84-86. 

 Thompson, G. E. Cir. 33; 89: 225-263; 

 90: 265-275; 1918: 281, 284, 287- 

 296; 1919: 399-400, 415-420; 1920: 



431, 432, 440-448; 1921: 552, 563 

 572. 



Thompson, R. B. Cir. 39; Cir. 41; 



1921: 551, 552, 616.. e 



Thornber, J. J. 1918: 282, 283-284, 297- 



302; 1919: 400, 427-432; 1920: 



432, 455-463; 1921: 553, 576-579. 

 Thrips arizonensis n. sp. Morgan (cotton 



thrips). 87: 200-201. 

 Thrips, cotton (Thrips arizonensis n. 

 sp. Morgan) : 

 injury to cotton. 87: 200. 

 spray for. 87: 201. 

 Thiirberia thcspesioidcs (wild cotton). 

 87: 173, 176; 1919: 437; 1920: 

 468; 1921: 583. 

 Timber rot of pepper tree. 1921: 614. 

 Timely Hints for Farmers, Nos. 136- 

 139 inclusive: 

 No. 136. Treatment of Seed Potatoes 



for Scab and Black Scurf. 

 No.l37. Butter-Making on the Ari- 

 zona Farm. 

 No. 138. Cytospora Canker, A Disease 

 Destructive to Cottonwoods and 

 Poplars. 

 No. 139. Sudan Grass Hay Versus 

 Alfalfa Hay for Dairy Cows. 

 Timothy: 



seed tests. Cir. 40. 

 Tolchaco reservoir site. 95: 535. 

 Tomatoes: 



attacked by boll worm. 87: 176. 

 diseases. 1918: 301; 1921: 614. 

 in the Tucson garden. 1918: 310. 

 on the Yuma Mesa. 89: 260. 

 variety tests. 1919: 444-445. 

 Tops (see gas oil). 

 Tractors on Arizona farms. 1918: 356- 



358. 

 Transpiration: 



as a factor in irrigation. 88: 207- 



210. 

 effect of soil on. 88: 208. 

 of trees: 



effects of, on ground water supply. 

 1921: 599-600. 

 rate of. 88: 208. 

 ratio, of plants. 88: 208. 

 Transportation for crops: 

 of Salt River Valley. 85: 11-13. 

 of the Yuma Mesa. 89: 227. 

 Trap crop for cotton boll worm. 87: 

 176. 



Trap patch for cotton square daubers. 



87: 189. 

 TREATMENT OF SEED POTA- 

 TOES FOR SCAB AND 

 BLACK SCURF. T. H. 136. 



cost of treatment. T. H. 136. 



formaldehyde treatment. T. H. 136, 



mercuric chloride treatment. T. H. 

 136. 

 Trichosonthcs quinquangnlata. 1920: 



473. 

 Triodia sp. 1919: 430. 

 Tropaeolutn tuberosum. 1920: 473. 

 Truck crops: 



in olive orchards. 94: 513. 



on the Yuma Mesa. 89: 260. 

 Tucson Farms Company: 



concrete irrigation ditches. 88: 212. 



concrete pipe. 86: 95. 

 Tufa, of the Salton Sea. 1919: 412, 414. 

 Turnips. 1918: 310. 



mfested by seed-corn maggot. 1921: 

 584. 

 Turville, E. S. 1921: 551. 

 "Twentv-four plus" fuel oil: 



price of. 92: 405; 1920: 477. 



quality of. 92: 423. 



tests of. 92: 405-409. 



use of. 92: 404; 1920: 477. 

 "Twenty-seven plus" fuel oil: 



engines burning. 1920: 477. 



price. 92: 404. 



supply of. 92: 404, 423. 



tests. 92: 405-409. 411, 412, 417. 



use of. 92: 404. 



u 



Ulmus pumila. 1919: 431. 



Union Melon Growers' Association. 



85: 57. 

 Union Oil Company. 92: 410, 412, 415. 

 United Produce Growers' Association of 



Arizona. 85: 54. 

 United States Biological Survey: 

 co-operation of, in range studies. 



1918: 339; 1919: 437; 1921: 583. 

 United States Bureau of Mines: 



distillation test for fuel oils. 92: 407. 



