SUBJECT INDEX 



603 



Typhus- 

 diagnosis, (35) 182. 



exanthematous, transmission by lice, (33) 857. 



fever organism in lice, (37) 851. 



fever, transmission, (26) 759. 



in dogs, (34) 682. 

 Typophorus canellus — 



in Maryland, (38) 155. 



notes, (35) 54. 

 Tyrannus— 



spp., feeding habits, (28) 56. 



verticalis, destruction of locusts by, (28) 351. 

 Tyroglyphus— 



americanus, notes, (2B) 863; (28) 457. 



farinae, see Flour mite. 



lintneri, notes, (27) 657. 



sp. notes, (27) 556. 



spp. on cheese, (39) 664. 

 Tyromyccs ellisianus, notes, (35) 655. 

 Tyrosin — 



and cystin, separation, (31) 807. 



as source of ammonia, (29) 723. 



assimilation by plants, (26) 32. 



content of proteins, (29) 465. 



detection, (28) 805. 



determination, (40) 113, 207. 



determination in proteins, (28) 805; (31) 711, 712, 

 807. 



effect on action of alcohol on plant cells, (34) 

 333. 



effect on Stilton cheese, (27) 474, 475. 



in Roquefort cheese, (26) 313. 



ingestion, elTect on metabolism, (28) 867. 



necessity in the diot, (36) 265. 



occurrence in— 

 millc, (26) 776. 



stachys tubers and citrus leaves, (26) 107. 

 sugar beets, (28) 810. 



preparation and determination, (27) 406. 

 Tyrosinase — 



action, studies, (37) 110. 



and deaminization, studies, (36) 412. 



compostion, (30) 708. 



of beets and potatoes, (35) 414. 



production and action, (28) 503. 

 Tyrothrix sp. in Stilton cheese, (28) 879. 

 Udamoselis pigmentaria, notes, (29) 54. 

 Udder— 



and process of millc production, (39) 679. 



bacteria, (27) 280; (28) 275; (29) 279; (35) 674; 

 (38) 76, 478; (39) 383; (40) 184, 185. 



bacteria, effect on quality of milk, (36) 476. 



bacteria in milk, (39) 384. 



disease, unusual cause, (27) 186. 



diseases, notes, (32) 376. 



diseases, treatment, (36) 693. 



elimination of artificial coloring matter by, (30) 

 474. 



histological appearances^ (29) 278. 



infections, (39) 890; (40) 87. 



surgical affections of passages, (26) 380. 



traumatic lesions of, (26) 285. 

 Udo, culture experiments, (37) 742. 

 Udo, notes, (31) 140. 

 Ufens niger, notes, (31) 752. 

 Ula spp., of North America, (33) 561. 

 Ulcers, treatment, (26) 580. 

 Ulla grass, production, (40) 243. 

 Ulmus— 



campestris, variations in salt content, (29) 28. 



fulva, mucin-like substances of, (31) 409. 

 Ultrafilter, new form, description and uses, (39) 804. 

 Ultrafiltration— 



apparatus, description, (36) 111. 



aseptic, apparatus for, (38) 225. 

 Ultramicroscope, description, (37) 711. 

 Ultramicroscopy — 



of soil extracts, (30) 516. 



treatise, (26) 82. 

 Ultraviolet rays- 

 absorption by — 



arable soil, (34) 414. 

 chlorophyll, (28) 37. 

 plants, (39) 733. 

 soils, (34) 817. 



action on fig must, (37) 314. 



antibiotic action, (28) 129. 



coagulation of proteins by, (29) 130, 131; (30) 110. 



decomposition of carbon dioxid by, (30) 431. 



Ultraviolet rays— Continued, 

 effect on — 



amylase, (31) 711. 



cane sugar, (26) 308. 



carbohyratcs, (28) 529. 



clilorophyll-containing cells, (33) 28. 



diastase and invertase, (26) 203. 



enzyms, (28) 110. 



fungi, (.38) 855. 



lactic acid, (28) 201. 



phosphorescent bacteria, (36) 526. 



plant reproductive organs, (3.5) 334. 



plants, (26) 430; (27) 827; (29) 130. 



the eye, (.34) 413. 

 in treatment of wounds, (38) 585. 

 lamp, description, (28) 214. 

 metabiotic action, (31) 379; (32) 475. 

 penetration of leaves by, (31) 129. 

 penetration of plant organs by, (33) 427. 

 purification of water by, (32) 87; (37) 588. 

 sacchariflcation of inulin by, (26) 802. 

 sterilization of milk iiy, (28) 277, 373, 675. 

 sterilization of water by, (26) 28; (27) 317; (28) 

 214, 317, 416, 514; (29) 415; (30) 419, 816. 

 Ultuna agricultural institute and farm, (37) 892. 

 Ulva lactuca — 



analyses, (26) 324. 

 sources of nitrogen for, (31) 828. 

 Umatilla Experiment Farm — 

 report, (30) 441; (40) 494. 

 work, (29) 540. 

 Umbilical necrobacillosis, studies, (33) 676. 

 Umbrella tree, host plant of fruit fly, (26) 758.. 

 Uncinaria canina, notes, (34) 275. 

 Uncinariasis in dogs, (36) 676. 

 Uncinula — 



aceris, symbiosis with maple leaves, (37) 327. 

 americana. (necator?), occurrence in Poland, 



(26) 845. 

 necator, hibernation, (34) 847. 

 necator, notes, (36) 347. 

 spiralis, treatment, (34) 841. 

 Underfeeding, effect on blood, (26) 360. 

 Uniform grades a nd standard packages, (40) 293. 

 Unilachnus n.g., erection, (40) 651. 

 United States Department of Agriculture- 

 Agricultural Commission to Europe, (40) 493. 

 and experiment stations, relationship, (29) 



604. 

 annual reports, (27) 196; (37) 297. 

 appropriations — 



1912-13, (27) 301. 



1913-14, (28) 301. 



1914-15, (31) 1. 



191,5-16, (32) 401. 



1916-17, (35) 301. 



1917-18, (36) 401. 



1918-19, (39) 301. 

 Bureau of Animal Industry — 



animal nutrition investigations, (27) 469. 



as a war auxiliary, (40) 577. 



report, (27) 196; (29) 793. 

 Bureau of Chemistry, color laboratory, (40) 16, 

 Bureau of Plant Industry- 

 activities, (28) 898. 



forest pathology laboratory, (40) 500. 



reclamation project farms, (40) 493, 494. 

 Bureau of Soils — 



activities, (36) 323. 



field operations, (31) 512; (34) 321 

 contributions to chemical journals, (36) 600. 

 development and activities, (37) 592. 

 farmers' bulletins, index, (35) 299. 

 Forest Service- 

 exhibit at San Francisco, (34) 347. 



organization and policy, (35) 451. 



research activities, war-time, (40) 743. 



scope of investigations, (28) 842. 



silviculture plans, (36) 143. 



work, (39) 648. 

 functions, (27) 706. 

 history, (36) 598. 

 Index to legislation, (26) 899. 

 laws relating to, (29) 899; (32) fi93; (33) 698 

 Librarv, accessions, (26) 95, 599, 899; (27) 97, 599, 



798; (28) 299, 599, 899; (29) 299, 599. 

 Library, cooperation with other libraries, (34) 



494. 

 market service, (30) 197. 

 notes, (28) 495, 699; (30) 96; (36) 798. 



