INDEX 
Page 
Abelmosckus esculentus host plant of Ascockyta 
abelmoschi . 207-212 
Acer saccharinum , susceptibility of seeds to 
desiccation. 526 
Acetic acid. See Add, acetic. 
Achras sapota, food plant of Ceratitis capi¬ 
tate, . 606-608 
Add— 
acetic, occurrence in silage.406-408 
butyric, occurrence in silage.406-408 
lactic, occurrence in silage.406-408 
propionic, occurrence in silage.406-408 
sulphuric, influence on nitrogen-assimi¬ 
lating bacteria. 323-333 
Aridity of Silage Made from Various Crops 
(paper). 395"4°9 
Aridity— 
silage. 395-409 
soil, influence on growth of legume bacteria 319 
Acrostalagmus sp. ( causal organism of stem 
lesions of Solanum tuberosum . 213-220 
Aegle Marmelos, resistance to Citrus-canker.. 340 
Aeglinae, susceptibility to Citrus-canker.... 340-341 
Aeglopsis Chevalieri, resistance to citrus- 
canker. 340 
Aggressin, natural, value in immunization 
against blackleg. 253-262 
Air, effect on composition of Ipomoea batatas 273-284 
Alfalfa. See Medicago satrpa. 
Alkalinity, soil, influence on growth of legume 
bacteria. 319 
Almond, Indian. See Termbudia catappa. 
Alternaria spp., causal organisms of stem 
lesions of Solanum tuberosum . 213-220 
Alway, E. J., and McDole, G. R. (paper): Va¬ 
riations in the Moisture Content of the Sur¬ 
face Foot of a Loess Soil as Related to the 
Hygroscopic Coefficient.453-480 
Amygdalus persica , food plant of Ceratitis 
capitate .. 605-608 
Anatomy of the Potato Plant, with Special 
Reference to the Ontogeny of the Vascular 
System (paper). 221-252 
Andropogon — 
halepensis sudanensis , syn. Holcus halepen- 
sis sudanensis . 
sorghum — 
composition. 176-185 
digestibility. 176-185 
effect of deep tilling in Great Plains on. 505-517 
effect of soil dynamiting in Great Plains 
on. 505-506 
effect of subsoiling in Great Plains on... 481-521 
Anthrax— 
symptomatic, improved methods of immu¬ 
nization against. 253-262 
toxin, symptomatic, concentration. 263-264 
Page 
Apanteles lacteicolor — 
description. 194-201 
distribution. 192-104 
economic importance. 200-201 
importation. 192 
life history. 195-199 
parasite of Euproctis chrysorrhoea . 191-206 
seasonal history. 195-199 
secondary parasitism. 201 
summer hosts of. 199-200 
A pantesis — 1 
arge, male and female, taken at light traps. 136-13 7 
vitiate , male and female, taken at light 
traps. 136-137 
Aphid. See Pemphigus popuU-transversus. 
Aphis— 
potato. See Macrosiphum solanifolii. 
spinach. See Rhopalosiphum persicae. 
spring grain. See Toxoptera graminum. 
Apple, rose. See Eugenia jambos. 
Apple. See Malus sylvestris. 
Ar chips — 
argyrospila, female, at light traps. 146-148 
rosaceana, female, at light traps. 146-148 
Amy, A. C., and Garber, R. J. (paper): Varia¬ 
tion and Correlation in Wheat, with Special 
reference to Weight of Seed Planted.359-393 
Arsilotpche albovenosa, female, at light 
traps.*. 136-140 
Artschwager, E. F. (paper): Anatomy of 
the Potato Plant, with Special Reference 
to the Ontogeny of the Vascular System 221-252 
Ascockyta abelmoschi— 
casual organism of podspot of Abelmosckus 
esculentus . 208-210 
cultural character.... 211 
description..'. 209-210 
inoculations with. 210-211 
n. sp. 209-211 
A talantia citriodes , resistance to Citrus canker. 341 
Atanasoff, D., et al. (paper): Com-Rootrot 
and Wheatscab. 611-612 
Autographa — 
biloba , female, at light traps. 136-140 
simplex , female, at light traps. 136-140 
Availability of Potash in Some Common 
Soil-Forming Minerals—Effect of Lime 
Upon Potash Absorption by Different 
Crops (paper).297-316 
A vena saliva — 
effect of— 
deep tilling in Great Plains on. 515 
subsoiling in Great Plains on.484-504 
silage of, aridity.400-409 
used in experiments with Puccinia graminis 113 
Averrhoa carambola, food plant of Ceratitis 
capitate .. 606-608 
