590 
INDEX TO VOLUME III 
Climatic distribution of certain types of 
Angiosperm leaves, 23 
Commelina chinensis, 580 
Convallaria chinensis, 580 
"Correlation" in rusts, 528 
Correlations between morphological char- 
acters and the saccharine content of 
sugar beets, 361 
Cortinarius, a study of development of, 
319; anfractus, 321; armillatus, 328; 
cinnamomeus, 326; distans, 329; lil- 
acinus, 330 
Crocker, William. Mechanics of dor- 
mancy in plants, 99 
Cryptanthus chinensis, 580 
Cuscuta epilinum, 185; epithymum, 185; 
planiflora, 185; arvensis, 185; indecora, 
185; coryli, 185; cephalanthi, 186; 
platfensis, 186; gronovii, 187 
Cuscutae of North Dakota, 185 
Dendrophthora cupressoides, osmotic pres- 
sure of, 442; gracilis, 442; opuntioides, 
443 
Desmodium styracifolium, 580 
Development in the genus Cortinarius, 
319 
Development of the Phylloxera vastatrix 
leaf gall, 337 
Diastase, secretion ot, by Penicillium 
camemhertii, 234 
Dionaea, effect of stimulation on leaves 
of, 68 
Distribution and growth of North Dak- 
ota Cuscutae, 185 
Dormancy, mechanics of, in plants, 99; 
causes of, 104 
Douglas, Gertrude E. A study of 
development in the genus Cortinarius, 
319 
East, E. M. Significant accuracy in 
recording genetic data, 211 
Effect of environmental conditions upon 
the number of leaves and the character 
of the inflorescence of tobacco leaves, 
493 
Embryo of Gnetum, 173 
Endosperm, of Gnetum, 164 
Erythrina variegata, 586 
Euphorbia maculata, peroxidase in, 3 
Exchange of ions between the roots of 
Lupinus albus and culture solutions 
containing three nutrient salts, 47 
Exosmosis, studies, on, 483 . 
Fertilization, in Gnetum, 161 
Frost, Howard B. Mutation in 
Mattiola annua, a Mendelizing species, 
384 
Fucus maximus, 581 
Gall, caused by Phylloxera, 337; by 
Peridermium cerebrum, 12 
Gametophyte, of Gnetum, male, 154; 
female, 156 
Gates, Frank C. The region of great- 
est stem thickness in Raphidophora, 
65 
Genetic data, significant accuracy in, 211 
Gigantochloa levis, 61 
Gnetum, morphology and affinities of, 
135 
Growth of forest tree roots, 384 
Gymnosporangium with repeating spores, 
39 
Gymnosporangium nootkatensis, 44; 
Sorbi, 44 
Harris, J. Arthur & Lawrence, John 
V. On the osmotic pressure of the 
tissue fluids of Jamaican Loranthaceae 
parasitic on various hosts, 438 
Hawaii, seaweeds of, 474 
Hieracium aurantiacum, peroxidase in, 3 
Hoar, Carl S. The anatomy and 
phylogenetic position of the Betulaceae, 
415 
HoLMAN, Richard M, The orientation 
of primary terrestrial roots with par- 
ticular reference to the medium in 
which they are grown, 274; Influence 
of the medium upon the orientation of 
secondary terrestrial roots, 407 
