Apr. i-June 24, 1918 



Index 



661 



Page 



Quercetin, and its glucosids, relationship to 

 gossypol 429-430 



Quince. See 5 j</onia spp. 



Quinine bisulphate, effect on infectivity of 

 mosaic virus 633 



Ramsey, C. B. and Rosenbaum, J. (paper): 

 Influence of Temperature and Precipita- 

 tion on the Blackleg of Potato S07-513 



Rat.relation to dissemination of hog cholera . 129-130 



Reed, H. R. and Vinall, H. N. (paper): 

 Effect of Temperature and Other Meteoro- 

 logical Factors on the Growth of Sor- 

 ghums 133-148 



Reed, J. C, et ai. (paper): Stability of Olive 

 Oil 353-366 



Relation between Biological Activities in the 

 Presence of Various Salts and the Concen- 

 tration of the Soil Solution in Different 

 Classes of Soil (paper) 213-223 



Relation of the Density of Cell Sap to Winter 

 Hardiness in Small Grains (paper) 497-506 



Rkixopus nigricans, isolation from soil 95 



Rhizocionia solani, isolation from soil 96 



Rietz, J. H., ct al. (paper): Investigations 

 Concerning the Sources and Channels of 

 Infection in Hog Cholera 101-131 



Robinson, R. H. (paper): The Caldtun Ar- 

 senates 281-294 



Roquefort cheese. See Cheese, Roquefort. 



Rosa sp., food plant of Taeniopteryx spp 41 



Rose, wild. See Rosa sp. 



Rosenbaum, J., and Ramsey, G. B. (paper); 

 Influence of Temperature and Precipita- 

 tion on the Blackleg of Potato S07-513 



Rubus parvifloTus, food plant of Taeniopteryx 

 spp 41 



Rust— 

 of Lactuca saliva, syn. Anthracnose of 



Lactuca saliva. 

 stem, occurrence on Trilicum spp 651-654 



Rye. See Secale cereale. 



Saliz spp., canker of — 



causal organism 333 



description 331-333 



food plant of Taeniopleryz spp 39. 41 



host plant of Cytospora chrysosperma 333-344 



"Salmon fly. " Sec Taeniopteryx. 



Salmon, S. Cand Fleming, F. L. (paper); 

 Relation of the Density of Cell Sap to Win- 

 ter Hardiness in Small Grains 497-305 



Salts, effect on infectivity of mosaic virus. . 619-637 

 plus acids, effect on gluten 412-414 



Sand, wind-blown, cause of inttmiescences 

 on Brassica oleracea capitala 256-257 



Sap, cell, relation of density to winter hardi- 

 ness in 497-50S 



Saponin, effect on infectivity of mosaic virus. 634 



Saw grass. See Cladium effusum. 



Secale cereale, density of cell sap in relation to 

 winter hardiness soo-S°i 



Selkregg, E. R.,and Wood, W. B. (paper); 

 Further Notes on Laspeyresia Molesta 59-72 



Serum, anthrax, inoculation experiments.. 493-494 



Serviceberry. See Amelanchier sp. 



Shothole of Lacluca saliva, syn. Anthracnose 

 of Lactuca saliva. 



Page 



Sidonia spp., food plants of Laspeyresia mo- 

 lesta 60 



Silver nitrate, effect on infectivity of mosaic 

 virus 623 



Smith, F. H., and Ewing, P. V. (paper); Di- 

 gestibility of Corn Silage, Velvet-Bean 

 Meal, and Alfalfa Hay When Fed Singly 

 ■ and in Combinations 611-618 



Sodium — 

 benzoate, effect on infectivity of mosaic 



virus 633 



carbonate, effect on infectivity of mosaic 



virus 622 



chlorid , effect on infectivity of mosaic virus . 622 

 hydroxid, effect on infectivity of mosaic 



virus 622 



nitrate, effect on infectivity of mosaic virus . 623 

 taurocholate, effect on infectivity of mosaic 

 virus 633 



Soil Acidity as Influenced by Green Manures 

 (paper). 171-197 



Soil Fungi in Relation to Diseases of the Irish 

 Potato in Southern Idaho (paper) 73-100 



Soil, ammonia production in by green ma- 

 nures 179-180 



capacity for irrigation water 1-36 



capillary capacity of 20-28 



effect of boron on 451-470 



effect on infectivity of mosaic virus 635-636 



fungi of, relation to potato diseases 73-100 



manured, organic matter of 187 



solution, biological activities, relation to 



concentration of 213-223 



See also sand. 



Soil rot. See also pox. 



Some Bacterial Diseases of Lettuce (paper) . 367-388 



Some Stoneflies Injurious to Vegetation (pa- 

 per) 37-42 



Sodium hydroxid, effect on infectivity of 

 mosaic virus 623 



Solanum tuberosum — 



host plant of Bacillus phylophthorus 507 



host plant of Cyslospora batala 443-444 



relation of soil fungi to diseases of 73-100 



Soil rot, disease of Ipomoea batatas 437-450 



Sorghum. See Andropogon sorghum. 



South Carolina lettuce disease 368-370,373-379 



Species, new 83,84,86,89,90,211, 



299-300,379,386-387,520-521 



Spilocryptus sp., parasite of Laspeyresia mo- 

 lesta 70 



Spinacia oleracea, effect of boron-treated 

 manure on 456-460 



Spinach. See Spinacia oleracea. 



Sporonema phacidioides, syn. Pyrenopeziza 

 medicaginis. 



Spray, insecticide, physical properties gov- 

 erning 523-538 



Stability of Olive Oil (paper) 333-366 



Stakman, E. C, and Levine, M. N. (paper); 

 A Third Biologic Form of Puccinia Grami- 

 nis on Wheat 651-654 



Stanford, E. E., and Viehoever, A. (paper); 

 Chemistry and Histology of the Glands of 

 the Cotton Plant, with Notes on the Oc- 

 currence of Sitailar Glands in Related 

 Plants 419-431 



