Apr .-Sept., 19 IS 



Index 



577 



Page 

 Scab, potato, effect of temperature on germi- 

 nation and growth of 129-134 



Schattenfroh, A., method of disinfecting 



hides 65-67, 87-S9, 90-91 



Secale cereale, inoculation of, with Puccinia 



graminis 194 



Seed, relation of, to infection by Phoma betae. 141 

 Seedling Diseases of Sugar Beets and Their 

 Relation to Root-Rot and Crown-Rot 



(paper) 135-168 



Self-sterility, in Vitis spp 318-319 



Sex, inheritance in Vitis spp 320 



Seymour-Jones, A., method of disinfecting 



hides 65-67, S7-89, 90-91 



Shantz, H. I,., and Briggs, L. J. (paper) In- 

 fluence of Hybridization and Cross-Pollina- 

 tion on the Water Requirement of Plants. 391-402 

 Shapovalov, M. (paper) Effect of Tempera- 

 ture on Germination and Growth of the 



Common Potato-Scab Organism 129-134 



Sheep, Shropshire — 

 degree of resemblance of parents and off- 

 spring with respect to birth as twins for . 479-5 10 



Skin, color of, inheritance in Vitis spp 320-323 



Soap agar, toxic effect of, on Ascochyta clemati- 



dina 33^-339 



Soap aad sulphur, mixture of, effect on leaf- 

 spot and stem-rot of Clematis paniculaia. . 336-337 

 Sodium — 

 carbonate — 

 and sodium chlorid, antagonism be- 

 tween 206-207 



and sodium sulphate, antagonism be- 

 tween 207-208 



effect of, on soil 215 



toxicity of, for Hordeuin spp 203-215 



chlorid — 

 and sodium carbonate, antagonism be- 

 tween 206-207 



and sodium sulphate, antagonism be- 

 tween 204-206 



effect of, on laxative property of Opuniia 



spp 427 



germicidal efficiency of 74-78, 82-S9 



toxicity of, for Hordeicm spp 203, 214-216 



sulphate — 

 and calcium sulphate, antagonism be- 

 tween 20S-211 



and sodium carbonate, antagonism be- 

 tween 207-20S 



and sodium chlorid, antagonism between 204-206 



toxicity of, for Hordcutn spp 203. 214-216 



sulphid, germicidal efficiency of 76-7 



Soil- 

 effect of soluble salts on 1S7-192 



neutralization of alkali in 213 



relation of salts to nitrification of 213-215 



relation of, to infection — 



by Rhizoctonia sp 156-159 



by Phoma betac 141 



Soil moisture — 

 effect on, of changes in tire surface tension of 

 the soil solution brought about by the ad- 

 dition of soluble salts 187-192 



influence of, upon rate of increase in sugar- 

 beet root-louse colonies 241-250 



Page 



Soil Protozoa (paper) 511-560 



Solatium. — 



melongena, inoculation of, with Phoma dc- 



structiva 10 



tuberosum — 



host plant of Spongospora subterranca. . . . 265 

 infection of, by Plasmodium cf Spongo- 



spora subterranca 266-277 



inoculation of, with Phoma destrucliva. . . lo-ii 

 Some Sugar-Cane Root-Boring "Weevils of the 



West Indies (paper) 255-264 



Sorghum — 

 hay — 



analysis of 439-440 



digestibility of 418-421 



effect of — 

 on body weight of dairy cows. 411-412,437-438 



on milk production 411, 435 



energy value of 414 



influence of, on milk fat 422-423 



nutrients of — 



consvuned by dairy cows 440-442 



digested bydairycows 413,443-444 



nutritive value of 416-417 



silage — 

 effect of — 



on body weights of dairy cows 412, 438 



on milk production 411, 436 



energy value of 414 



influence of, on milk fat 422-423 



nutrients of, digested by dairy cows 413, 



443-444 



nutritive value of 416-417 



Sorghum, uulgarc — 

 effect of available nitrogen on hydrocyanic- 

 acid content of 1S0-184 



hydrocyanic-acid content of 179-185 



Sorgo, Orange. See Sorgku7it vulgare. 

 Sources of the Early Infections of Apple Bit- 

 ter-Rot (paper) ; 59-64 



Species, new 99, 252, 291,477 



Sphaeria arceuthobii, syn. W allrolhiella arceu- 



thobii 369 



Spondias lutea, food plant of Diaprepes spen- 



glcri 260—261 



Spoitgospora subterranca — 

 infection of Solanum, tuberosum by Plasmo- 

 dium of 266-277 



life history of 265-278 



production of Plasmodia in spores of 275-277 



spore germination of 274-275 



Spore, anthra.x, disinfection of hides infected 



with 65-92 



Spraying, effect of, on leaf-spot and stem-rot 



of Clematis paniculata 336-340 



Stakman, E. C. (paper) Relation between 

 Puccinia Graminis and Plants Highly Re- 

 sistant to Its Attack 193-200 



Stem-rot, control of, on Clematis paniculata 33S"340 

 Stewart, G. R. (paper) Availability of the 



Nitrogen in Pacific Coast Kelps 21-38 



Storage-rot. occurrence of, on Beta rulgaris. 144-145 

 Sugar beet — 



See Beta vulgaris. 

 root louse. See Pemphigus betae. 

 Sugar cane — 

 root-boring weevils of the West Indies. . . 255-264 

 See Sacckarum ojfficinarum. 



