INDEX 
Page 
Acid production by Rhizapus tritici in De¬ 
caying Sweet Potatoes: H. A. Edson. 9-12 
Acidity of Corn and its Relation to vegetative 
Vigor: Annie May Hurd. 457*469 
Acids, formation— 
by Botrytis cmerea ... 155-164 
by Rhizopus spp... * 55~*64 
Ackert, J. E., Herrick, C. A., and Danheim, 
Bertha L'. Growing Experimental Chick¬ 
ens in Confinement.,.451-456 
Aeration, soil, importance to plant growth, 
and indication method. *33-14® 
Aleurodicus manni, description. 253-254 
Almond, Indian, infestation with fruit fly, 
Hawaii, and effect of parasite. 2-4 
Alsberg, Carl L., and Schwartze, Erich W.: 
Quantitative Variation of Gossypol and 
Its Relation to the Oil Content of Cotton¬ 
seed. 285-295 
Animals— 
feeding, value of palm kernel and palm- 
kernel meal. 165-169 
heat production, relation to surface meas¬ 
urement . 419 - 4 ** 
measurement of surface area.....419-430 
Aphids, transmission of potato diseases- 50-51. 
75 . 84 . 90 , 91 . **3 
Apple-blotch cankers,origin and control... 403-418 
Appl< 
infection with coconut budrot. 270 
leaf scar canker infection.. 407 
petiole lesions, relation to cankers, and 
control.....405-407, 4 « 
spraying for blotch infection of leaf and 
twig. 409-41* 
susceptibillity of varieties to blotch canker 
412-4x3 
twig infection with blotch disease, relation 
to cankers.403-408 
Arizona, cotton, growth of fruiting parts 
under irrigation in dry region. 195. 
196,197.198,199-201 
Arkansas, wheat disease in. 351-353 
Bacillus trifolii, cause of Italian clover dis¬ 
ease... 47 * 
Bacteria, crowngall— 
movement and growth in plants........ 123-131 
nature, and location in affected tissue... 125-131 
Bacterial Leafspot of Clovers: E. R. Jones, 
Maude M. Williamson, F. A. Wolf, and 
Eucia McCulloch. 471-49® 
Bacterial Spot of Lima Beans: W. B. Tisdale 
and Maude M. Williamson.. 141-154 
Bacterial spot of dover.471-490 
Bacterium— . 
glycrrteum , comparison with Bacterium 
trifoliorum .479,481,483 
phaseoli , cause of bacterial blight of beans. 141-242 
sojae, comparison with Bacterium trifoliorum 
479 ,481,483 
trifoliorum — 
cause of dover bacterial leafspot, cul¬ 
tural studies. 475-489 
technical description. 487 
tumefadens ... H 9 -X 3 * 
viridtfaciens, isolation, morphology, tem¬ 
perature relations, etc. 144-150 
Baker, A. C.: An Undescribed Orange Pest 
from Honduras. * 53-*54 
Ballard, W. W., Martin, R. D„ and Simpson, 
D. M.: Growth of Fruiting Parts in Cotton 
Plants. 195-208 
Barley, inoculation with wheat stripe rust, 
results.367,368,369 
Beans— * 
infection with Corticium vagum , tempera¬ 
ture studies and results.438-442 
Lima— 
bacterial Spot of. *41-154 
inoculation with bacterial spot, results 150-151 
Page 
Bibliography— 
acidity relation to plant growth. 468-469 
apple-blotch disease.417-418 
grain rusts. .400-401 
plant metabolism and dimate relations.... 28-30 
Blackberry— 
infection with orange rust.210-212,219-240 
orange rust, new type. 491-494 
stomata development and distribu tion, rela¬ 
tion to orange rusts. 495-5®® 
varieties resistant to orange rust. 237-238 
Blackrot, cacao, description and cause. 267-284 
Blight, bacterial, on Lima beans, cause, de¬ 
scription, comparison with bacterial spot... 141- 
* 4 »# *43 
Blotch, apple, canker, origin and control... 403-4x8 
Bolls, cotton, growth in different varieties. 203-206 
Bone meal, effidency in Porto Rican soils... 174- 
, *83-187 
Bordeaux mixture, spraying apple trees for 
blotch canker, results. 4x0-412 
Botrytis cinerea, hydrogen-ion changes caused 
by. 160-164 
Breeding, dwarf forms of corn, inheritance 
studies. 297-322 
Buckwheat, growing in soil cultures and sand 
cultures, within climatic chambers. 17-27 
Budrot, coconut— 
description and cause. 267-284 
infection experiments with various plants. 268-271 
Cacao— 
blackrot, cause, study. 267-284 
canker, cause, study. 267-284 
infection with coconut budrot. 270 
losses from blackrot and canker, in the Phil¬ 
ippines ... 267-283 
Caeoma nitens .491-494 
Canker— 
apple blotch- 
eradication in young orchards.414-416 
location and date of appearance— 404-405,4x3 
longevity of fungus. 408 
nursery stock infection... 4x4 
origin and control.405-4x8 
cacao, description and cause. 267-284 
carbonic add, use in determination of sul¬ 
phur compounds in dry lime-sulphur.. 325-327, 
330-332, 334 # 335 
Carrero, J. O., and Gile, P. E.: Effidendes 
of Pbosphatic Fertilizers as Afffected by 
Liming and by the Length of Time the 
Phosphates Remained in Porto Rican 
Soils .. 171-194 
Cattle, measurement of surface area.419-430 
Cereals, inoculation with wheat stripe rust, re¬ 
sults. 367-37* 
Chambers, climatic, purpose, construction, 
and operation. x7~*o 
Chickens— 
feeding in confinement, experiments.452-454 
growing in confinement, experiments— 451-456 
Climate, effect on properties of the soil, ex¬ 
periments. *3-30 
Clover- 
bacterial leafspot erf. 471-490 
red, growing in soil cultures in greenhouses, 
experiments. 15-17 
Cobb, N. A.: The Pharynx and Alimentary 
Canal of the Hookworm Larva Necator 
americanus ...35 9-362 
Coconut, budrot— 
cause, study. 267-284 
losses from, in the Philippines..'. 267,283 
Color solution, standard, preparation in oxy¬ 
gen-testing method. 136 
Comparative Study of Pkytophtkora faberi on 
Coconut and Cacao in the Philippine Is¬ 
lands: Otto A. Reinking. 267-284 
Corn— 
addity, relation to vegetative vigor.__457-469 
dwarf forms, breeding, inheritance studies. 297-32* 
leaf and stalk juices, comparative aridities 462-464 
60098—25f-2 
Sox 
