July i-Sept, 30, 1918 
Index 
615 
Page 
Citrumelo, resistance to Citrus-canker. 349 
Citrus — 
aurantifolia, resistance to Citrus-canker- 346 
excelsa , resistance to Citrus-canker. 348 
genus, susceptibility of wild relatives of, to 
Citrus-canker.340-355 
grandis — 
overwintering of Citrus-canker organism 
in. 523-524 
resistance to Citrus-canker. 346 
hybrid. See Hybrid, citrus. 
Hystrix , resistance to Citrus-canker. 344 
japonica, food plant of Ceraiitis cdpitata .. 606-608 
Medica , resistance to Citrus-canker... 344 
mitis, resistance to Citrus-canker. 347 
nobilis — 
deliciosa , food plant of Ceraiitis capitate. 606-608 
resistance to Citrus-canker. 347 
var. unshiu , overwintering of Citrus- 
canker organism in. 523-524 
sinensis, food plant of Ceraiitis capitate. .. 606-608 
spp. resistance to Citrus-canker. 344-348 
susceptibility of wild relatives of, to Citrus- 
canker. 340-344 
Citrus-canker— 
organism of, overwintering... 523-524 
resistance of Citrus plants to. 337-3 57 
susceptibility of Citrus plants to. 337~357 
Claucena— 
lansium, resistance to Citrus-canker. 340 
wampi, food plant of Ceraiitis capitate, ... 606-608 
Clonostachys sp., casual organism of stem le¬ 
sions of Solanum tuberosum . 213-220 
Clubroot, disease of crucifers caused by Plas- 
modiophora brassicae . 543“572 
Coccidioidal granuloma, occurrence in- 
cattle. 533-542 
man.... . 533-534 
Coccidioides immitis — 
casual organism of coccidioidal granuloma. 533-542 
cultural characters. 53 5-53 6 
description. 534“536 
inoculations with. 536-540 
lifecycle. 534-535 
Coffea arabica, food plant of Ceraiitis capitate 606-608 
Coffee. See Coffea arabica. 
Cole, J. S., and Chilcott, E, C. (paper): Sub¬ 
soiling, Deep Tilling, and Soil Dynamiting 
in the Great Plains.481-521 
Comparative Study of Salt Requirements for 
Young and for Mature Buckwheat Plants in 
Solution Cultures, A (paper).. .. 151-175 
Comparative Toxicity of Cottonseed Products 
(paper).425-452 
Complement fixation, improved method for 
recovering trypanosomes from blood of rats 
for antigen purposes. 573-576 
Composition and Digestibility of Sudan-Grass 
Hay (paper)... 176-185 
Concentration of Symptomatic Anthrax 
(Blackleg) Toxin (paper). 263-264 
Conifers, whitespot disease of. 595-604 
Contribution to the knowledge of Toxoptera 
gramihum in the South (paper). 97-110 
Corethropsis sp., casual organism of stem le¬ 
sions of Solanum tuberosum . 216-219 
Page 
Corn— 
broom. See Andropogon sorghum. 
Sec also Zea mays. 
Com-Rootrot and Wheatscab (paper). 611-6x3 
Cornopus didymus , food plant of Pemphigus 
populi-transversus . 585 
Correlation between the Percentage of Pat in 
Cow’s Milk and the Yield (paper). 67-96 
Cotton. See Gossypium spp. 
Cottonseed- 
effect of cooking on toxicity.426-429 
meal, toxicity..425-452 
toxicity.425-452 
Cottonwood. See PoPulus spp. 
Cow- 
milk of, correlation between percentage of 
fat and yield. 67-96 
value of Sudan-grass hay as feed for. 176-185 
Cow pea. See Vigna sinensis. 
Crambus hortuellus, female, at light traps.. 145,148 
Crocker, W., and Harrington, G. T. (paper): 
Resistance of Seeds to Desiccation. 525-532 
Cronartium — 
oCcidentale — 
cause of pinon blister-rust. 441-424 
comparison with Cronartium ribicola. .. 414-415 
description.413-415 
dissemination.420-425 
distribution. 415-418 
effect on hosts.422-423 
n. sp...413-415 
overwintering.420-422 
inoculation.418-422 
Ribicola , comparison with Cronartium occi- 
dentale .414-4*5 
Crudferae, occurrence of galls in. 577-594 
Damping-off, resemblance to whitespot dis¬ 
ease of plants. 595 
Datana ministra , female, at light traps. 136-144 
Davenport, A., and Fred, E. B. (paper): In¬ 
fluence of Reaction on Nitrogen-Assimilat¬ 
ing Bacteria. 317-336 
Deep tilling of soil, effect in Great Plains.. 505-517 
Desiccation, resistance of seeds to. 525-532 
Diachasma — 
fullawayi, parasite of Ceraiitis capitate .... 606-6 io* 
tryoni, parasite of Ceratitis capitate .606-6x0 
Diacrtsia virginica , female, at light traps... 136-138. 
Dog, susceptibility to coccidioidal granu¬ 
loma. 536-538 
Drouth, relation to moisture content of loess 
soil.457-461 
Dynamiting of soil, effect in Great Plains.. 505-517 
Edson, H. A-, and Shapovalov, M. (paper): 
Potato-Stem Eesions. 213-220 
Effect of Different Oxygen Pressures on the 
Carbohydrate Metabolism of the Sweet 
Potato (paper). 273-284 
Elasmopalpus UgnoseUus , female, at light 
traps. 145,148 
Emmer, See Triticum dicoccum. 
Eremocitrus glauca , resistance to Citrus- 
canker..*. 34» 
Eriobotrya japonica, food plant of Ceratitis 
capitate ... 606-60& 
Errata. IV 
