Apr. i-Sept. 15, 1921 
Index 
885 
Seed—Continued. Page 
characters in Pima cotton. 231-233 
relation between injury of coats and sus¬ 
ceptibility to molds and fungicides..;.. 99-122 
Seed-Coat Injury and Viability of Seeds of 
Wheat and Barley as Factors in Suscep¬ 
tibility to Molds and Fungicides (paper).. 99-122 
Seedling-blight of rice. See Sclerotium rolfsii. 
Septoria blight, treatment of celery seed for 
control.369-372 
Septoria lycopersici — 
difference from Bacterium exiliosum . 127 
relation to Solanum carolinense. . 501-506 
Sequoia sempervirens, chlorosis. 155 
Serum, constant-temperature bath. 541-544 
Setaria equina, relation to Eosiniphiles.679-688 
Sex of flies, relation to dispersion by flight. 761-762 
Shive, John W., and Jones, Einus H. (paper): 
Effect of Ammonium Sulphate upon Plants 
in Nutrient Solutions Supplied with Ferric 
Phosphate and Ferrous Sulphate as Sources 
of Iron. 701-728 
Silage, bacteriological and chemical studies. 767-789 
Smith, Erwin F., and Godfrey, G. H. (paper): 
Bacterial Wilt of Castor Bean (Ricinis com¬ 
munis E.). 255-262 
Smith, Erwin F. (paper): Effect of Crown- 
gall Inoculations on Bryophyllum. 593-598 
Sodium— 
clilorid— 
effect of leaching soils. 268-271 
in ration for pigs. 280-341 
citrate in ration for pigs. 280-341 
sulphate, effect of leaching soils. 268-271 
tartrate in ration for pigs. 280-341 
Soil- 
temperature, effect on Corticium vaqum. . 459-482 
transmission of potato leaf roll. 59-60 
Solanum — 
carolinense — 
collar-rot. jg 3 
relation to Septoria lycopersici . 501-506 
mammosum, host of Septoria lycopersici _ 504 
tuberosum — 
host of Bacterium exiliosum . 123-156 
host of Chrysophlyctis endobiotica . 589-592 
leafroll, net-necrosis, and spindling- 
sprout. 47-80 
transmission of wilt diseases. 821-848 
Solenopotes capillatus, a Sucking Eousc of 
Cattle Not Heretofore Known in the United 
States (paper). 797-801 
Some Fundamentals of Stable Ventilation 
<p a p«>.343-368 
Some Observations Regarding Eosinophiles 
(paper). 677-688 
Some Relations of Temperature to Growth 
and Infection in the Citrus Scab Fungus 
Cladosporium citri (paper). 243 253 
“Sore-shin fungus.” See Rhizoctonia solani. 
Souring of Beef Caused by Bacillus megather¬ 
ium, A (paper). 689-698 
Sour orange. See Citrus aurantium. 
Soybean silage. 775-787 
Species, new. i2 3 -rs6,179-184,185-188 
Spelt-wheat hybrid, suppression of awns by 
fungus. 699-700 
Sphaerococcus — Page 
draperi. Syn. Phoenicococcus marlatti. 
marlatti. Syn. Phoenicococcus marlatti. 
Sphaeronema fimbriatum — 
cause of potato rot. 211-226 
glucose as a source of carbon. 189-210 
Spinach aphis. See Myzus Persicae. 
Spindling-sprout of Solanum tuberosum.... 47-80 
Spondylocladium atrovirens, isolated from 
potatoes. 828-848 
Sporotrichum sp., isolated from potatoes.. 828 
Stable fly. See Stomoxys calcitrans . 
Stable ventilation. 343-368 
Staphylococcus — 
albus, isolated from sour beef. 690,694 
citreus, failure to produce odor on beef_ 694 
Starch— 
in ration for pigs. 281-341 
in sweet potato, effect of Rhizopus tritici . 627-635 
Slemphyllium sp., isolated from potatoes. 828 
Stemrot of rice. See Sclerotium oryzae. 
Sterigmatocystis nigra, production of citric 
and oxalic acid. 223 
Stewart's Disease of Corn (paper). 263-264 
Stolons in timothy. 173-178 
Stomoxys calcitrans, dispersion by flight.. 730-766 
Storage-rot fungi— 
glucose as a source of carbon. 189-210 
respiration. 211-226 
Streptococcus mastitis, failure to produce odor 
on beef. 695 
Studies in the Physiology of Parasitism with 
Special Reference to the Secretion of Pec- 
tinase by Rhizopus tritici (paper). 609-625 
Study of the Relation of the Eength of Kernel 
to the Yield of Corn (Zea mays indentata) 
(W cr ). 427-438 
Slysanus stemonitis . isolated from potatoes... 828 
Subsoiling, effect on cotton rootrot. 122-123 
Sucrose crystals in condensed milk. 791 
Sucking louse of cattle. See Solenopotes capil¬ 
latus. 
Sugars, in sweet potatoes, effect of Rhizopus 
tritici . 627-635 
Sulphate— 
ammonium, effect on plants supplied with 
* rou . 701-728 
calcium, effect on alkali soil. 271 
copper, effect on mold infestation of wheat 106-119 
ferric, effect 011 growth of storage-rot fungi. 190 
ferrous— 
effect on chlorosis of conifers. 153-171 
source of iron for plants. 701-728 
iron, effect on pine seedlings. 158 
magnesium, effect on growth of storage-rot 
. , 9 o 
sodium, effect on leaching soils. 268-271 
Sulphuric acid. See Acid, sulphuric. 
Sunlight, effect on enzyms. 621-622 
Sunflower. See Helianthus annuus. 
Swanson, C. O. (paper): Effect of Ration on 
Development of Pigs. 279-341 
Sweetcom, nail test. gj 7 _g ao 
Sweet orange. See Citrus sinensis. 
Sweet potato— 
effect of Rhizopus tritici on respiration and 
carbohydrate changes. 627-635 
