INDEX TO VOLUME V 
555 
Susceptibility to parasitism in maize, 295 
Thespesia populnea, structure of seedling 
of, 121, 124 
Thom, Charles and Church, Mar- 
garet B. Aspergillus fumigatus, A. 
nidulans, A. terreus n. sp. and their 
allies, 84 
Three-salt nutrient solution for plant 
cultures, 337 
Tobacco smoke, effect of, on growth of 
micro-organisms, 171 
Toole, E. H. and Tottingham, W. E. 
The influence of certain added solids 
upon the composition and efficiency of 
Knop's nutrient solution, 452 
Tottingham, W. E. (See Livingston, 
B. E., 337; and Toole, E. H., 452) 
Triplasis purpurea, cleistogene in, 254 
Tradescantia fluminensis, endurance of 
extreme conditions by, 507 
True, R. H. (See Harvey, R. B., 516) 
Uredinales of Guatemala based on collec- 
tions by E. W. D. Holway, 325, 420, 
462, 522 
Uredinium, structure of, in Puccinias- 
trum, 55 
Ustilago zeae, resistance of strains of 
corn to, 295 
Value of certain nutritive elements in 
the development of the oat plant, 301 
Variability and conservatism in the 
seedling of Dicotyledons, 120 
Variation, cell measurement as an aid in 
analysis of, 192 
Volvox, vertical distribution of, in 
plankton of Lake Monona, 178 
Yeast, bacteriological method for study 
of, 32 
Zinc as antagonistic agent to alkali 
salts, 151 
