1050 
Journal of Agricultural Research 
Vol. XXIV 
Bees— Page 
Italian, temperature studies. 2S0,282-284 
piercing in reading temperatures, method 279,281 
temperature— 
maximum, experiments. 277,278,284,285 
studies. 275-288 
Berberis spp., host of the grain stem-rust 
aeciospores.. 540,545,546,555-560,565 
Bermuda grass, injury by Helmenthosporium 
cynodontis . 719-720 
Bibliography— 
apple storage diseases. 184 
butterfat analysis. 397-398 
gummosis. 232-235 
Helminthosporium spp. 731-739 
mosaic disease. 262 
nitrogen fixation. 274 
temperature of bees. 286-287 
wheat composition and growth.951-952 
Biologic forms, grain stem rust, statistical 
study. 539-568 
Biologic Forms of Puccinia Graminis on Var¬ 
ieties of Avena spp.: Stakman, E. C., Le¬ 
vine, M. N., and Bailey, D. L. 1013-1018 
Blue grass, Kentucky, injury by Helmintho- 
sporium vagans . 642,686-688 
Borax, effect on plant growth in black alkali 
„soil...332-333,337 
Botrytis cinerea — 
cause gummosis of citrus, and control. 214-219, 
224, 226 
Bouyoucos, George John: Movement of Soil 
Moisture from Small Capillaries to the 
Large Capillaries of the ^il upon Freez¬ 
ing. 427-432 
mjury to coniferous nursery stock.. 741 
Branches, shaking after spraying effect on 
injury by sprays. 532 
Brandes, E. W., and Klaphaak, Peter J.: 
Cultivated and Wild Hosts ci Sugar-Cane 
or Grass Mosaic. 247-262 
Brazil, citrus gummosis occurrence. 193,194 
Breazeale, James F.: Nutrition of Plants Con¬ 
sidered as an Electrical Phenomenon.41-54 
Breeding oats for rust resistance. 1016-1017 
wheat for rust resistance studies.980,994 
Brome grass, injury by Helminthosporium 
bromi . 672-675 
Brotherton, Wilber, Jr.: Further studies of the 
Inheritance of “Rogue" IVpe in Garden 
Peas. 815-852 
Browning, internal— 
of apple, prevention experiments.. 170-171,176-179 
of the Yellow Newtown apple, study— 165-184 
Bumblebees, temperature studies. 276,277 
Burke, Edmund, Swingle, D. B., and Morris, 
H. E.: Injury to Foliage by Arsenical Spray 
Mixtures. 501-538 
Biuming, citrus bark, relation to gum forma¬ 
tion. 225 
Butterfat, fatty adds— 
determination. 365-398 
relation to oils and fats in feed of cows... 38^392 
Butyric add— 
butterfat, analyses and notes. 366, 
370-379,386-396 
presence in soils, effect cm Azotobacter con¬ 
tent. 294-295 
Cabbage— 
fusarium disease, relation to soil tempera¬ 
ture and soil moisture. 55-56 
seedlings, growth, influence of soil tempera¬ 
ture and moisture. 58-62,82 
varieties, susceptibility to Fusarium dis¬ 
ease. 64-67,69-73 
yellows, cause, and relation to soil tempera¬ 
ture and moisture. 55-86 
Caldum— 
and sodium, dilute solutions, pseudoantago¬ 
nism. 753-758 
arsenite, preparation, and use as insecti- 
dde. 502,511,512,514,516,519,520 
carbonate— 
addition to soils, effect on Azotobacter 
content. 292-294 
use in nitrogen fixation experiments.. 185-190 
sulphate, effect on plant growth on black 
alkali soil.320-326,335 
California— 
dtrus trees injury by gummosis.. 191,193, i 9 S, 23c 
California— Pag 
Pajaro Valley, apple losses from internal 
browning. 165,169,172 
Cane— 
mosaic, hosts wild and cultivated, studies 
and tests. 247-262 
varieties— 
of North India type, immunity to mosaic 
disease. 255-256 
susceptibility to mosaic disease, tests.. 255-256 
Capillaries, soil, moisture movement, relation 
to freezing. 427-432 
Capric acid, butterfat, analyses and notes_ 366, 
370-379,386-396 
Caproic acid, butterfat, analyses and notes.. 366, 
370-379,386-396 
Caprylic acid, butterfat, analyses and notes.. 366, 
370-379,386-396 
Carbonic acid, testing as solvent of concrete 
tile..476-477 
Carrero, J, O., and Willis, L. G.: Influence of 
Some Nitrogenous Fertilizers on the devel¬ 
opment of Chlorosis in Rice. 621-640 
Carrot decoction, testing for pectinase pro¬ 
duction. 864-865,870 
maceration, measurement in ' pectinase 
studies.865-869,871 
Cement, tests and analyses.;.480-482 
Chapin’s method of nicotine determination, 
results.965,968,969 
Chemicals, cause of gummosis in citrus trees 225-227 
Cherry tree, budding with rosetted peach 
buds, results.. 312-313 
Chlorids, effect on plant growth in black 
alkali soil. 329,330,335 
Chlorosis, rice, relation to nitrogenous fer¬ 
tilizers. 621-640 
Christopher, Warren N., Stakman, E. C., 
Henry, A. W., and Curran, G. C.: Spores in 
the Upper Air. 599-606 
Cinna arundinacea. Reed grass, wood. 
Citrange hybrids, susceptibility to citrus scab. 958 
Citric acid, presence in soils, ^ect on Azoto¬ 
bacter. 296 
Citrus- 
bark wounds, relation to gmn formation. 225-226 
fruits and hybrids, susceptibility to Clados- 
porium citri . 955-959 
gum, nature and origin, relations to wotmds, 
chemicals, etc. 223-230 
gummosis. 191-236 
history, review, and literature. 191-195,232-235 
inoculations with gum-forming organisms.. 198- 
210,211-213,214-218,221-222 
scab, susceptibility of citrus fruits and hy¬ 
brids. 955-959 
sinensis, resistance to citrus scab, notes... 956,957 
species and varieties, resistance to Pytkia- 
cystis citfophthora, experiments. 207-210,231 
trees, growth and composition, experiments 
and literature. 801-81 
varieties growing in solutions of sodium 
and calcium, experiments. 753-757 
Cladosporium citri. See Citrus scab........ 955-969 
Clark and Lubs, method of determination of 
hydrogen-ion concentration. 909 
thermoregulator, note. 443 
Climate, effect on wheat nitrogen content, 
study, review. 939-94° 
Clover— 
composition, table. 797 
sweet—investigations. 795-799 
silage, composition and acidity. 797-799 
Coconut— 
fat in cow feed, effect on acids in butterfat, 
notes. 381-391 
press cake with com, feeding experi- 
mmts..;. 973-974 
Colletotrichum circinans. See Smudge, onion. 
Colloids, soil, microscopic estimation. 879-883 
Colorado, forests and climate, studies.. 102,103 ,164 
Concentrates, proteins, mixtures with corn, 
nutritive value. 971-978 
Concrete, draintile, injury by decomposition, 
products of soils. 471-500 
Conifers— 
drought resistance. 131» 145-160 
field planting, methods to prevent snow 
mold.. 746 
heat resistance comparison of species. 152-154 
