INDEX 
Acer — Page 
rubrum, host plant of Comandra umbellata.. 134 
saccharinum, composition of sap of. 538-540 
saccharum— 
composition of sap of. 538-540 
mineral composition of. 529-542 
Achillea millefolium , host plant of Comandra 
umbellata . *34 
Acid, fruit, toxicity of, to Sclerotinia cinerea .. 388 
Actinomyces — 
bovis, effect of low temperature on. 654 
chromogenus, effect of low temperature 
on. 651-652,654 
organicus , effect of low temperature on... 651-652 
Activity of Soil Protozoa (paper).477-488 
Aeration, effect of, on germination. 1168 
Age, relation of, to occurrence of tumors in 
domestic fowl. 399 
Agglutination Test as a Means of Studying the 
Presence of Bacterium abortus in Milk 
(paper).*. 871-875 
Air, agency in dissemination of Cercospora 
Per sonata . 895-897 
Alcohol, combustion of, in respiration calo¬ 
rimeter. 345 
Alfalfa. S eeMedicago sativa. 
Alkali salts— 
combinations of, effect on plant growth— 13-48 
effect of, on germination and growth of 
crops. 1-53 
toxicity of. 1-53 
Allard, H. A. (paper), Distribution of the 
Virus of the Mosaic Disease in Capsules, 
Filaments, Anthers, and Pistils of Affected 
Tobacco Plants. 251-256 
Alternaria — 
panax, parasite of Panax quinquefolium .. 181-182 
■ solani , effect of low temperature on. 652 
Alternaria panax, the Cause of a Rootrot of 
Ginseng (paper). 181-182 
Alway, F. J., and Bishop E. S. (paper), Ni¬ 
trogen Content of the Humus of Arid Soils 909-916 
Amaranthus retroflexus , transpiration of-618-623 
Ammonium hydroxid, effect of, on germina¬ 
tion. 1168-1169 
Anaerobe- 
facultative— 
non-spore-forming.... 939 
slime-forming. 94 ° 
Andropogon — 
sorghum, transpiration of. 597-602 
virginicus , host plant of Comandra umbellata 134 
Angelica villosa, host plant of Comandra um¬ 
bellata . 134 
Angular Deafspot of Cucumbers (paper)... 465-476 
Anions, effect of, on growth of Triticum spp.. 42-43 
27468 0 —16--3 
Page 
Announcement of Weekly Publication. i 
Antennaria plantaginifolia, host plant of Co¬ 
mandra umbellata . 134 
Anthonomus grandis — 
development of. 1188-1189 
relation of— 
humidity to development of... 1183-1191 
temperature to development of. 1183-1191 
Apanteles militaris — 
biology of.495-508 
endoparasite of Heliophtla unipunctata . 495 
function of caudal vesicle of. 504-506 
life stages of. 495 ” 5 oi 
origin of caudal vesicle of. 504-506 
Aphis, green apple. See Aphis pomi. 
Aphis — 
pomi — 
biology of. 955-994 
diomorphic reproduction by. 9 1 8 
distribution of. 957-958 
egg stage of. 960-967 
feeding habits of. 982-984 
forms of. 980-981 
history of. 957-958 
life of stem mother of.. 968-970 
methods of studying. 958-960 
morphology of. 955-994 
nomenclature of. 956 
overlapping generations of. 981-982 
sexes— 
habits of. 984-991 
life of. 984-991 
summer forms of. 970-978 
spp., plan of description of. 967-968 
Apparatus for Measuring the Wear of Con¬ 
crete Roads (paper). 951-954 
Apple. See Malus. 
Arachis hypogaea — 
composition of seed of. 1162 
leafspotof. 891-902 
Army worm, fall. See Laphygma frugiperda. 
Arsenic— 
absorption of, by soil.... *. 460 
applied as spray for weeds, fate and effect 
of.459-463 
fixation reactions in soil.461-463 
in soil, effect of irrigation on. 460-461 
Arrhenatherum elatius, syn. Avena eliator. 
As cocky ta colorata, effect of low temperature 
on. 654 
Ash Composition of Upland Rice at Various 
Stages of Growth (paper).357-364 
Asiatic Species of Gymnosporangium Estab¬ 
lished in Oregon, An (paper). 1003-1010 
(1193) 
