INDEX 
Abortion— Page 
bacillus, characteristics of. 9-11 
disease- 
infection with, through the bull. 15 
production of normal calves by cows 
infected with. 11-12 
record of experimental infection with, 
through teat. 12-14 
relation of bacillus to embryo. 15-16 
udder as channel of infection with. 14-15 
Absorption of Nutrients as Affected by the 
Number of Roots Supplied with the Nu¬ 
trient (paper). 73-95 
Acid, phosphoric- 
absorption by roots. 76-87 
effect of organic substances on solubility in 
soils. 264 
Adrenalin, factor in increase of blood cor¬ 
puscles. 179-180 
A gromyza femoralis. Syn. Cerodontafemoralis. 
Alfalfa. See Medicago saliva* 
Aluminum salts, effect on fixation of ammo¬ 
nia by soils. i 5 <>ji 53 
Alway, F. J., and McDole, G. R. (paper): 
Relation of the Water-Retaining Capacity 
of a Soil to Its Hygroscopic Coefficient. 27-71 
Ammonia, in soil- 
determination . 144 
factors influencing fixation. 146-155 
production.321-337 
recovery. i43-*46». 188-200 
Apple. See Malus sylvestris. 
Atmometer— 
measurement of solar-radiation intensity 
by. 289-290 
use in comparison of evaporation rate with 
transpiration rate of Medicago saliva. .. 277-292 
Avena saliva, host plant of Cerodontafemoralis 18 
Bacteria— 
cause of Citrus disease. 1-8 
soil— 
influence of crop on. 296-299 
influence of season on. 299-300 
influence of water on.321-337 
Bacterium citrarefaciens — 
cultural characters. 4“6 
description... 3 
effect of desiccation on. 7 
effect of sunlight on. 7 
histology. 3 
identification. 2-3 
isolation. 2-3 
morphological characters. 4 
n. sp. 3 
temperature relations. 7 
Batrachedra rileyi. Syn. Pectinophora gos- 
sypiella. 
Benzene compounds— Page 
quantity required to kill insects. 374“376 
relation of temperature to— 
lipoid solubility in. 377-378 
toxicity of. 371-381 
time required to kill insects by.374-376 
Blood— 
clotting, effect of muscular exercise on... 173 
dried— 
effect on nitrifying power of soils. 200-204 
nitrification in soils. 186-204 
pigs’— 
effect of heat of sun on. 167-183 
effect of muscular exercise on. 167-183 
morphology. 131-140 
specific gravity, effect of muscular exercise 
on. 173 
Bollworm— 
pink. See Pectinophora gossypietta. 
scavenger. See Pyroderces rileyi. 
Briggs, E-J-, andShantz, H. E. (paper): Com¬ 
parison of the Hourly Evaporation Rate of 
Atmometers and Free Water Surfaces 
with the Transpiration Rate of Medicago 
sativa. 277-292 
Busck, August (paper): The Pink Bollworm, 
Pectinophora gossypiella.343-370 
Calcium- 
salts, effect on ammonia fixation by soils.. 149 
solubility in soils. 153-154,2 64 
Calf, production by cow infected with abor¬ 
tion disease.... n-12 
Carbon bisulphid— 
comparison with benzene derivatives for 
toxicity to insects.374-380 
quantity required to kill insects.3 74~3 76 
time required to kill insects. 374“376 
Carrero, J. O., and Gile, P. E. (paper): Ab¬ 
sorption of Nutrients as Affected by the 
Number of Roots Supplied with the Nutri¬ 
ent. 73-95 
Cauliflower inflorescence— 
origin in hybrid of Zea ramosa and Zea 
tunicaia . 393~394 
significance in hybrid of Zea ramosa and Zea 
tunicaia . 393"394 
Ceredonta femoralis — 
control. 24 
distribution. 17-18 
habits. 21-22 
host plants. 18 
injury by. 20-21 
life history. 18-20,21-22 
nomenclature. 17 
parasites. 17-25 
seasonal history. 23-24 
427 
