INDEX TO VOLUME II 
579 
Gymnosporangium galls, anatomical 
study of, 402 
Gymnosporangium globosum, galls of , 41 1 ; 
juniperi-virginianae, galls of, 402 
Harris, J. Arthur. An extension to 
5.99° of tables to determine the 
osmotic pressure of expressed vege- 
table saps from the depression of the 
freezing point, 418 
Hawkins, Lon A. Some effects of the 
brown-rot fungus upon the composi- 
tion of the peach, 71; The utilization 
of certain pentoses and compounds of 
pentoses by Glomerella cingulata, 375 
Heald, F. D. and Studhalter, R. A. 
Seasonal duration of ascospore expul- 
sion of Endothia parasitica, 429 
Heliotropism, negative, of urediniospore 
germ tubes, 82 
Helophytes, 25 
Hemicryptophytes, 24 
Heredity and mutation as cell phe- 
nomena, 519 
HiBBARD, R. P. The question of the 
toxicity of distilled water, 389 
Hibiscus tiliaceus, transverse section, 
246 
Hitchcock, A. S. New or noteworthy 
grasses, 299 
Holcus halepensis, 299; sorghum, 299 
HoLDEN, Ruth. The anatomy of a 
hybrid Equisetum, 225 
Hubbard, F. Tracy. A taxonomic 
study of Setaria italica and its im- 
mediate allies, 169 
Hybrid Equisetum, on the anatomy of, 
225 
Hypochlorite of calcium as a seed 
sterilizer, 420 
Inheritance in Nicotiana, 332 
Ions, absorption of, by living and dead 
roots, 250 
Ions, exchange of, between roots of 
Lupinus albus and culture solutions, 
containing one nutrient salt, 255; 
containing two nutrient salts, 311 
Johnson, H. V. The absorption of ions 
by living and dead roots, 250 
Kern, Frank Dunn. The genetic 
relationship of parasites, 116 
Lasiodiplodia, probable non-validity of, 
324 
Lasiodiplodia tubertcola, 326; theobromae, 
326 
Leaves of Pinus in winter, temperature 
of, 32 
Lupinus albus, use of in distilled water 
experiments, 391 
Lupinus albus, exchange of ions between 
the roots of, and culture solutions, 
255; 311 
Magnesium nitrace, experiments with, 
266, 316; sulphate, experiments with, 
268 
Malvales, anatomy of, 238 
Manisuris, 299; fasciculata, 299 
Merremia gemella, a woody stem of, 
induced by high warm water, 86 
Millets, 196; 197 
Morphology and systematic position of 
Podomitrium, 199 
Morphology as a factor in determining 
relationships, ill 
Morphology of Gnetum, 161 
Muenscher, Walter L. C. A study 
of die relation of transpiration to the 
size and number of stomata, 486 
Mutation and heredity as cell phenom- 
ena, 519 
Mutations of Oenothera stenomeres, 100 
New or noteworthy grasses, 299 
New York and vicinity, flora of, 23 
Nicotiana, factors influencing flower 
size of, 332 
Nicotiana Tabacum vars. X N. syl- 
vestris, 334; var. macrophyllum, 334; 
flower size of and factors influencing, 
332 
Node in Angiosperms, 5 
Normal and abnormal permeability, 93 
