1000 



EXPERIMENT STATION RECORD. 



[Vol. 43 



Trees — Continued. 



roadside, management, 543. 



shade, insects affecting, 159. 



shade, lierosene injury to, 732. 



shade, for Idaho, Idaho, 650. 



shade, for Ohio, Ohio, 342. 



shade, protection for, Ohio, 746. 



street, laws, Mich., 342. 



tolerance of, use of term, 840. 



transplanting, fall v. spring. Mo., 141. 

 Trench-foot, relation to deficiency diseases, 



168. 

 Trialeurodes floHdensis, notes, 851. 

 Triatoma megistus, notes, 182. 

 Tricalcium phosphate, effect on composition 



of soil extracts, Mich., 124. 

 Trichogramma — 



minuta, parasitism by, Mass., 159. 



pretiosa, parasitism by, 759. 

 Trifolium fragiferum var., new forage 



plant, 528. 

 Trimeromicrus maculatus, notes, U.S.D.A., 



365. 

 Trinitrotoluol — 



for rock and soil blasting, 480. 



water resisting properties, U.S.D.A., 

 282. 

 Trioxymethylene powder for mosquito con- 

 trol, 853. 

 Trissolctis edess(B, notes, 259. 

 " Tristeza," cause, 182. 



Trochorrhopalus strangulatus, notes, 52. 

 Troctes divinatoria. {See Book-lice.) 

 Trombicula mediocrts, notes, 260. 

 Tromhidium aJcamushi, notes, 260. 

 Trona potash, fertilizing value, S.C, 126. 

 Tropceolum majua flowers, genetics of 



coloration, 328. 

 Troughs, concrete, construction, 90. 

 Truck crops — 



cultivation, implements for, 892. 



variety tests, Tex., 36. 

 {See also Gardening and Vegetable 

 gardening. ) 

 Trucks. (See Motor trucks.) 

 Tryp an osoma — 



cruzi, notes, 57, 182. 



letvisi, parasite of rat, 883. 

 Trypanosome of carabao, 472. 

 Trypanosomiasis, American, summary, 182. 

 Tryptophan — 



detection in urine, 316. 



determination, 504. 

 Tubercle bacilli — 



solubility, 583, 584. 



types in human tuberculosis, 686. 

 Tuberculariacese on box, 849. 

 Tuberculin, tests and retests, 81. 

 Tuberculosis — 



bovine, control, 272. 



bovine, economic significance, 81. 



bovine, eradication, U.S.D.A., 471. 



bovine, paper on, 683. 

 chemotherapy, 584. 



complement fixation test for, 278, 687. 

 control, 272, 780. 



Tuberculosis — Continued. 



eradication, accredited herd plan, 473 ; 

 U.S.D.A., 473. 



eradication methods, comparison, 

 473. 



human, transmission to fowls, 687. 



human, types, 686. 



intradermal test, 683. 



status, 584. 



transmission, studies, 81, 685. 

 Tule lands, reclamation, Greg., 21. 

 Tulip — 



leaves, frost necrosis, 849. 



trees, transplanting, Mo., 142. 

 Turbidimeters, description, 413, 614. 

 Turkeys, raising with special reference to 



blackhead, 475. 

 Turnip finger-and-toe disease, 47. 

 Turnips — 



breeding experiments. Can., 735. 



carbon-nitrogen ratio for, 430. 



culture, 638. 



culture experiments, 638. 



culture on peat soil, 23. 



feeding value, Can., 771. 



fertilizer experiments. Can., 735. 



storage experiments. Can., 735. 



variety tests, 232, 638 ; Can., 735. 



yields, Minn., 824. 

 Turpentining operations, notes, 241. 

 Tussock grass, sweet, notes, 830. 

 Tplenchus — 



angustus, notes, 444, 652. 



devastatrix, control, 49. 



devastatrix, on red clover, 46. 



devastatrix, notes, 350. 



spp., notes, 445. 



tritici, notes, 751. 

 Typhoid — 



fowl, in Prance, 84. 



immunity, studies, 473. 



vaccine, preparation, 76. 

 Typophorus canellus, control, Md., 559. 

 Udder infection, effect on milk, 877. 

 Ulla grass, deterioration, 448. 

 Ultraviolet rays — 



effect on bananas, 730. 



effect on blister rust fungus, Can., 

 754. 



effect on pineapples, 730. 



effect on sugar cane, 730. 



sterilization of water by, 479. 

 United States Department of Agriculture — 



and agricultural colleges, cooperation, 

 704. 



appropriations, 1920-21, 101. 



cold storage plant, 892. 



motion pictures, U.S.D.A., 698. 



report, 298. 



States Relations Service. (See States 

 Relations Service.) 



Weather Bureau. (See Weather Bu- 

 reau.) 



yearbook, 496. 

 United States (Jeological Survey, Reclama- 

 tion Service, report, 85, 



