578 
INDEX TO VOLUME IX 
Ergot, the chemistry and toxicology of, 348 
Erysiphe graminis, 447; on barley, 426; 
Polygoni on Oenothera, 449 
Euonymus japonicus, infected by powdery 
mildew, 450 
Euphorbia maculata, viability of seeds in, 
268 
Farr, Clifford H. The meiotic cytoki- 
nesis of Nelumbo, 296 
Fimbriaria, 291 
Flax, top and root growth in, 432 
Fomes fraxinophilus on ash, 506; igniarius 
on poplar, 506 
Forests of southeastern Missouri, 3 
Fouquieria splendens, water content of the 
leaves of, 262 
Fragaria sp., temperatures of, 387 
Freezing, the effect of low-temperature 
storage and, on fruits and vegetables, 551 
Fungi, environmental temperatures of, in 
nature, 385 
Fusarium and hydrogen-ion concentration, 
161; hatatatis, 464; conglutinans, 464; 
oxysporum, 462; radicicola, 464 
Gericke, W. F, On the physiological 
balance in nutrient solutions for plant 
cultures, 180; certain relations between 
root development and tillering in wheat: 
significance in the production of high- 
protein wheat, 366 
Gibberella Saubinetii on wheat, 159 
Glomerella Gossypii and hydrogen-ion con- 
centration, 159 
Growth of field corn as affected by iron 
and aluminum salts, the, 47 
Gymnosporangium, studies in the genus, 
IV. Distribution of the mycelium and the 
subcuticular origin of the telium in 
G. clavipes, 354; on Juniperus virginiana, 
354; juniperi-virginiana infections on 
apple, 197 
Hanson, Herbert C. Prairie inclusions in 
the deciduous forest climax, 330 
Hawkins, Lon A. The effect of low- 
temperature storage and freezing on 
fruits and vegetables, 551 
Healing in some algal cells, methods of, 
18 
Hendersonia theaecola on tea, 81 
Hevea brasiliensis, Pestalozzia on, 79 
Hopkins, E. F. Hydrogen-ion concen- 
tration in its relation to wheat scab, 159 
Hordeum vulgare, absorption of salts by, 
316 
Hunter, Mabel R. The present status 
of Scolopendrium in New York State, 28 
Hydrogen-ion concentration in its relation 
to wheat scab, 159 
Impatiens aurea, 200 
Iron and aluminum salts, the growth of 
field corn as affected by, 47 
Irwin, Marian, and Margaret Wein- 
stein. Comparative studies on respi- 
ration XXI. Acid formation and de- 
creased production of CO2 due to ethyl 
alcohol, 277 
Johnston, Earl S. Undercooling of peach 
buds, 93 
Jungermanniales, 291 
Kauffman, C. H., and H. M. Kerber. 
A study of the white heart-rot of locust 
caused by Trametes robiniophila, 493 
Kerber, H. M. (See C. H. Kauffman, 493) 
Klaphaak, Peter J., and H. H. Bartlett. 
A preliminary notice of genetical studies 
of resistance to mildew in Oenothera, 446 
La Rue, Carl D., and H. H. Bartlett. 
A demonstration of numerous distinct 
strains within the nominal species Pest- 
alozzia Guepini Desm , 79 
Lepidium virginicum, viability of seeds in, 
268 
Lepiota, development of: clypeolaria, 512; 
cristata, 512; seminuda, 512 
Levine, Michael. The origin and devel- 
opment of lamellae in Agaricus catn- 
pestris and certain species of Coprinus, 
509 
Lignification of mature phloem in herb- 
aceous types, 239 
Locust, a study of the white heart-rot 01, 
caused by Trametes robiniophila, 493 
Lolium temulentum, 234 
Lunularia, 293 
Lychnis githago, viability of seeds in, 268 
Macrosporium brassicae, 459; commune and 
hydrogen-ion concentration, 159; sar- 
cinaeforme, 464 
