1919] 



INDEX OF SUBJECTS. 



1001 



TriboKum — 



confuaum, notes, 57, 



confusum, studios, 358. 



spp., notes, 759. 

 TricliiniP, effects of lieat on, 684. 

 Trichomitnn termitidin, studies, 464. 

 Triehotlirips, key, 847. 

 TfifoUum lupinastcr, culture in Alaska, 



Alaska, :{1. 

 Tridonura hicorim n.sp., description. 4G:5. 

 Trioxys cupressicola n.sp., description, 03. 

 Triphenylmethane dyes, antiseptic value. 



474. 

 Trlplite as source of phosphoric acid. S17. 

 Trisetum suhspicatinii, analyses, Wyo., 333. 

 TrombidiidiB of Minnesota, 57, 360. 

 Tropical agriculture, treatise, 194. 

 Truck crops — 



climatic requirements, U.S.D.A., 417. 



diseases, studies, Fla., 542. 



Fusarium diseases, Minn., 745. 



insects affecting, Fla., 455. 



variety tests, Tex., 35. 

 Trucks. (See Motor trucks.) 

 Trychom/mpha campanula n.sp., studies, 



464. 

 Trypaneidffi of Brazil, 75S. 

 Trypanosoma- f/nyanennc n.sp., notes, 878. 

 Trypanosoma, life cycle, 781. 

 Trypanosomes of domestic mammals, 284. 

 Trypanosomiasis, immunity reaction, 190. 

 Tsutsugamushi disease, studies, 753. 

 Tubercle bacilli — 



attenuatetl, for tuberculosis control, 

 85. 



human, bovine, and equine, compari- 

 son, 878. 

 Tuberculin — 



determination, 877. 



testing in Michigan, 284. 



tests, lymphangitis reaction to, 782. 



tests, value, 781. 

 Tuberculosis — 



bovine, in children, 85. 



complement fixation reaction, 190. 



control, 474, 777, 878 ; U.S.D.A., 479. 

 683. 



diagnosis, 478, 878. 



differentiation from lymphangitis In 

 cattle, 782. 



in farm poultry, lovpa, 88. 



notes, 280. 



treatment vnth aromatic hydrocar- 

 bons, 682. 



Tuberculous — 



blood, fat content, 764. 



blood, phagocytosis in, 187. 



infection, influence of protein intoxica- 

 tion on, 190. 



meat, detection, 191. 



serums, antitoxic power, 878. 

 Tulip petals, plasmolysis of epidermal cells, 



818. 

 Ttilips— 



doubling, monograph, 742. 



wild, growth behavior, 742. 



Tumidiscapits orthopterw n.sp., descrip- 

 tion, 360. 

 Turkeys, feeds and feeding, Can., 370. 

 Turnip — 



dry rot, studies, 657. 



flnger-and-toe disease, lime for, 451. 

 Turnips — 



as cover crop for peaches, Del., 145. 



ash constituents, 502. 



breeding experiments, 797. 



culture experiments, 229, 334, 729, 

 737; Can., 528. 



culture on bog soil, 230. 



feeding value. Can., 567. 



fertilizer experiments, 229, 334, 423. 



following oats and legumes, 231. 



on partially sterilized soils, 515. 



nutritive value, 557. 



rotation experiments, R.I., 434. 



seed size as affecting yield, 536. 



sodium for, R.I., 426. 



time of sowing, 234. 



vai-iety for Alaska, Alaska, 30. 



variety tests, 334. 



vitamin content, 762. 



weeding experiments, 737. 

 Turpentine — 



Douglas-fir, 541. 



resin as a foam breaker, 410. 

 Turtle fat, digestibility, U.S.D.A., 65. 

 Turtles, nematode parasite, 753. 

 Tussock moth — 



on Douglas fir, 552. 



white-marked, notes, U.S.D.A., 462. 

 Twilight, astronomical and civil, tables, 



808. 

 Twin hybrids in Drosophila, 867. 

 Twinning in alfalfa, 530. 

 Twins, female, from single egg cell of the 



ring dove. 867. 

 Tychius picirostris, notes, 251. 

 Tylenchiis anoustus, studies, 64. 

 Typhlocyba — 



comes. (See Grape leaf -hopper.) 



roscB, biology, 849. 

 Typhoid — 



equine. (See Influenza, equine.) 



fever, diet used in treatment, 561. 



fly. (See House fly.) 

 Typhus, relation to lice, 552. 

 Udder infections — 



relation to cellular count of milk, 

 Mich., 578. 



streptococcic, Mich., 681. 

 Underdrainage, theory of, 883. 

 United States Department of Agriculture — 



and experiment stations, coordination 

 of work, 610. 



appropriations, 1919—20, 1. 



laws relating to, 99. 



Ofllce of Farm Management, 292, 386. 



organization list, 197, 



program of work, 198. 



reports, 397. 



Weather Bureau, report, 417. 



yearbook, 698. 



