INDEX. 87 



Page. 



St. Paul, Minn., locality of experiments with rusts 49, 50, 56, 73 



Salmon, E. S., on investigations of barley mildew 71, 82 



Sapin-Trouffy and Dangeard, on sexual reproduction in rusts 33 



Schoeler, N. P., on the noxiousness of the barberry to grain crops 31, 82 



Schopf , J. D ., on the noxiousness of the barberry to grain crops 30, 82 



Schroter, J., on the investigation of rusts 15, 32, 82 



Selection, methods used in developing rust-resistant strains 15, 70-73, 77-78 



Sitanion longifolium, host plant for grain rust 28 



Soil, character and treatment for prevention of disease 68-70, 77 



Sorauer, P., effect of excess of nitrogen on grain rusts 69, 82 



Spores, rust, presence in atmosphere at various times 53-55, 76 



Sporobolus airoides, host plant for rusts 55 



Spraying for prevention of grain rusts 66-68, 77 



Stakman, E. C, experiments with rusts 54 



Summary of bulletin 73-78 



Sweden, investigations on the wintering of grain rusts 46, 76 



Swingle, W. T., and Kellerman, W. A., spraying experiments for prevention 



of grain rust 66, 81 



experiments in relation to grain rusts 67 



Teleutospores, stage predominant in leaf rust of barley 14 



Temperature, relation to development of rust 44, 59, 63-66, 77 



Timothy rust. See Rust, timothy. 



Trisetum sp., host plant for grain rust 16 



Triticum vulgare. See Wheat, winter. 



Tulasne, L. R., on the relation of summer rust to autumn rust 31, 82 



Uredo linearis, occurrence on wheat 46 



Uredospores of rusts. See Rusts, grain, uredospores. 

 Viability of rust spores. See Rusts, grain, viability. 



Ward, H. M. , on investigations of rusts 46, 55, 58, 59, 68, 70, 82 



Wheat, leaf rust, occurrence 8, 10, 13, 23-24, 27-28, 34, 38-39, 49, 55-57, 73, 74, 75 



period of susceptibility to attacks of rust 60 



Preston, use in inoculation experiments 17 



spring, disastrous effect of rust 10 



stem rust, occurrence 9-10, 13, 15, 16, 17-18, 23, 25, 27, 34, 35, 42^3, 56, 75 



winter, host of grain rust , 2S, 51, 52 



Wind, medium of dissemination of grain-rust spores 53-55, 76 



Windt, L. G., on the noxiousness of the barberry to wheat 30, 82 



Wintering of rust spores. See Rusts, grain, wintering. 



Withering, W., on the noxiousness of the barberry to wheat 29, 30, 82 



Young, Arthur, on the noxiousness of the barberry to wheat 30 



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