552 
Journal of Agricultural Research 
Vol. VII 
Page 
Hoagland, D. R., and Sharp, L. T. (paper): 
Acidity and Adsorption in Soils as Meas¬ 
ured by the Hydrogen Electrode.123-145 
Hoagland, Ralph (paper): Formation of He- 
matoporphyrin in Ox Muscle During 
Autolysis. 4 I- 45 
Honeybee. See Apis mellifica. 
Hordeum pusUlum , food plant of Macrosiphum 
QTanarium . 466 
Host Plants of Thielavia basicola (paper).. 289-300 
Hydrogen electrode, acidity and adsorption 
in soils as measured by the.123-145 
Hygroscopic coefficient— 
concordance of. 347 
estimation of— 
f rom hygroscopic moisture.3 51-388 
from maximum water capacity.348-351 
of soils, use of two indirect methods for the 
determination of. 345“359 
Hyphantrea cunea , effect of nicotine sulphate 
on. 95 
Immobility of Iron in the Plant (paper).83-87 
Influence of Bordeaux Mixture on the Rates 
of Transpiration from Abscised Leaves and 
from Potted Plants (paper). 529-548 
Insecticide, effect of nicotine as an. 89-122 
Ipomoea coccinea, host plant of Thielavia 
basicola . 294 
Iron- 
analysis of leaves of Citrus limonum for.. 85-86 
assimilation of, by rice. 503-5 ^28 
immobility of, in the plant.83-87 
Johnson, J. (paper): Host Plants of Thielavia 
basicola. 289-300 
Juncus tenuis , food plant of Macrosiphum 
granarium . 465 
Kelley, W. P. (paper): Nitrification in Semi- 
arid Soils. 417-437 
Klein, M. A., Lipman, C. B., and Burgess, 
P. S. (paper): Comparison of the Nitrifying 
Powers of Some Humid and Some Arid 
Soils. 47-82 
Laspeyresia molesta, an Important New 
Insect Enemy of the Peach (paper). 373"378 
Laspeyresia molesta — 
character of injury by. 375~377 
description of... 373“374 
Lathyrus odoratus , host plant of Thielavia 
basicola . 293 
Lemon, rough. See Citrus limonum. 
Lens esculenta , host plant of Thielavia basicola. 294 
Leptinotarsa decemlineata , effect of nicotine 
sulphate on. 95 
Lespedeza striata, host plant of Thielavia 
basicola . 294 
Life History and Poisonous Properties of 
Claviceps paspali (paper). 401-406 
Life History of Habroeytus medicaginis, a 
Recently Described Parasite of the Chalcis 
Fly in Alfalfa Seed (paper). 147-154 
Lime requirement, estimate of, by electro¬ 
metric method. 130-132 
Page 
Linar ia spp., host plants of Thielavia 
basicola . 293-294 
Lindsey, J. B., and Beals, C. L. (paper): 
Chemical Composition, Digestibility, and 
Feeding Value of Vegetable-Ivory Meal.. 301-320 
Lipman, C. B., Burgess, P. S., and Klein, 
M. A. (paper): Comparison of the Nitrifying 
Powers of Some Humid and Some Arid 
Soils. 47-82 
Lolium italicum , food plant of Macrosiphum 
granarium . 465 
Lotus — 
corniculatus , host p lant of Thielav ia basicola. 2 94 
viUosus , host plant of Thielavia basicola - 294 
Lupinus — 
albus, host plant of Thielavia basicola . 293 
angustifolius, host plant of Thielavia basi¬ 
cola . 293 
hirsuius, host plant of Thielavia basicola - 294 
luteus, host plant of Thielavia basicola .. 293 
thermis , host plant of Thielavia basicola . 293 
Lycopersicon esculentum — 
host plant of Spongospora subterranea - 222-223 
transpiration experiments with potted 
plants of. 536-539; 544-546 
Mclndoo, N. E. (paper): Effects of Nicotine as 
an Insecticide. 89-122 
Macrosiphum granarium, the English Grain 
Aphis (paper). 463-480 
Macrosiphum — 
avenivorum, syn. Macrosiphum granarium. 
granarium — 
description of— 
egg of. 469 
forms of.466-469 
sexes of.468-469 
distribution of. 465 
food plants of.465-466 
fungus enemies of. 479 
life history and habits of. 469-478 
natural enemies of. 478-479 
synonymy of. 463-464 
sanborni — 
nicotine in the system of. 103 
Maize. See Zea mays. 
Malus — 
sp — 
acidity of normal and diseased.34-36 
alcohol determinations in sound and dis¬ 
eased. 36-37 
host plant of A phis malifoliae .321-344 
sylvestris, some effects of Sphaeropsis ma- 
lorum upon the chemical composition of.. 17-40 
Martin, W. H. (paper): Influence of Bordeaux 
Mixture on the Rates of Transpiration from 
Abscised Leaves and From Potted Plants 529-548 
Medicago — 
denticulata , host plant of Thielavia basicola. 294 
sativa — 
host plant of Thielavia basicola . 293 
life history of Habroeytus medicaginis , a 
recently described parasite of Brucho- 
phagus funebris in the seed of. 147-154 
Melanoplus femoratus, nicotine in the sys¬ 
tem of 
ios 
