Jan. a-Mar. 26, 1917 
Index 
481 
Phytopkthora —Continued. Page 
syringae — 
growth. 238 
morphology of mycelium.241-242 
Plum. See Primus spp. 
Pond lily. See Nymphaea spp. 
Potash. See Potassium. 
Potassium— 
arsenate, injury to fruit trees.298-299 
arsenite, injury to fruit trees.298-299 
availability in orthoclase-bearing soils. 21-28 
effect on Citrus aurantium . 131-132,134 
in orthoclase— 
effect of calcium hydrate on. 24 
effect of calcium sulphate on.24,27 
in pegmatite— 
effect of calcium sulphate on.22-23 
effect of calcium hydrate on. 22-23 
in soil- 
effect of calcium hydrate on. 25 
effect of calcium sulphate on. 25-27 
in wheat, effect of calcium sulphate on..... 27 
Potato. See Solatium tuberosum. 
Protein, estimation of.451-455 
Prunus spp., susceptibility to arsenical 
injury. 304-305 
Pseudoglobulin— 
separation from immune serum.38-41 
transformation into euglobulin.449-456 
Pyrus sp., susceptibility to arsenical injury. 304-305 
Rand, F. V. (paper): Leafspot-Rot of Pond 
Lilies Caused by Helicosporium nymphaea- 
rum. 219-232 
Relative Influence of Microorganisms and 
Plant Enzyms on Fermentation of Com 
Silage, The (paper).361-380 
Ribes roezli , host plant of Cronartium ribicola. 330 
Ricinus communis , tumor formation in_177-181 
Ritzman, E. G. (paper): Ewes' Milk: Its Fat 
Content and Relation to the Growth of 
Lambs. 29-36 
Rosenbaum, J. (paper): Studies of the Genus 
Phytophthora.. 233-276 
Scarlet hibiscus. See Hibiscus coccineus. 
Sderotinia cinerea , temperature relations... 139-164 
Sclerotium Rolf sit — 
causal organism of peanut-wilt.441-448 
effect on Trifolium incarnatum . 447 
seed dissemination.444-445 
Scorzonera hispanica, occurrence of crowngall. 181 
Season, relation to arsenical injury of fruit 
trees. 306 
Seed, dissemination of wilt of Arachis hypo- 
gaea by. 444“445 
Serum— 
anthrax— 
effect of heating on pseudoglobulin_499-456 
immunity studies. 37-56 
standardization, by complement fixation. 53-55 
bovine, tests. 10-14 
degree of fixation with. 11-14 
diphtheria, effect of heating on pseudoglo¬ 
bulin. 449-456 
hog, tests. 16-17 
human, tests. 17 
immune, separation of pseudoglobulin 
from. 38-41 
preparation of globulin from.40-41 
Page 
Serum—Continued. 
preparations, chemical analyses of. 45-50 
proteins, changes during hyperimmuniza¬ 
tion. 50-5* 
tetanus, effect of heating on pseudoglo¬ 
bulin. 449-456 
Shorey, E. C., Fry, W. H., and Hazen, W. 
(paper): Calcium Compounds in Soils. 57-77 
Silage- 
analysis of. 365-366 
development of— 
acidity.368-374,376-377 
alcohol.368-373,376-377 
effect of antiseptics on fermentation. 365 
fermentation— 
chemical change in.366-376 
rise of temperature in.375-376 
formation of carbon dioxid in. 373“374 
influence of microorganisms on fermenta¬ 
tion. 361-380 
influence of plant enzyms on fermenta¬ 
tion. 361-380 
Smith, E. F. (paper): Mechanism of Tumor 
Growth in Crowngall. 165-186 
Sodium- 
arsenate, injury to fruit trees.298-299 
arsenite, injury to fruit trees. 298-299,313 
Soil- 
analysis, for calcium.67-69 
calcium compounds in. 57”77 
character in relation to little-leaf.383-388 
classification according to color. 59-65 
effect of calcium hydrate on potassium in.. 25 
effect of calcium sulphate on potassium in.. 25,27 
effect of irrigation water and manure- 
on nitrates of. 333-359 
on soluble salts of. 333~359 
moisture, measurement by dilatometer .. 195-217 
orthoclase-bearing, availability of potash.. 21-28 
petrographic analysis.65-66 
Soja — 
kispida. Syn. Sofa max. 
max— 
characters of Fusarium spp. on.430-431 
economic importance of.421-422 
growth in inoculated soil. 433-437 
Fusarium-blight of— 
history.422-424 
manner of infection.425-427 
occurrence.422-424 
symptoms...:.424-425 
Solatium tuberosum — 
blackleg of— 
association with Phytophthora infestuns. .. 89 
studies of. 79-126 
sources of infection with blackleg.90-91 
Sorosporella uvella — 
description. 191-193 
occurrence— 
in Euxoa tessellata . 190 
in cutworms in America. 189-194 
Sorosporella uvella and Its Occurrence on 
Cutworms in America (paper). 189-194 
Soybean. See Soja max. 
Speare, A. T. (paper): Sorosporella uvella 
and Its Occurrence on Cutworms in Amer¬ 
ica. 189-194 
