576 
INDEX TO VOLUME X 
306; scaberrima , 198; Schiedeana, 190; 
scorpioides, 195, 303; Seemanniana, 189; 
segregata, 193; sericea, 190, Shaferi, 190; 
simplex , 303; squamulosa , 304; subacu¬ 
minata, 193; tarijensis, 301; texana, 195; 
varroniaefolia, 301; vernicosa, 189; vimin- 
alis, 193; Wrightii, 193; yungasensis, 299; 
yungiiensis , 193 
Veronica, 521 
Verticordia, 182 
Viciafaba, 248 
Victoria, South Australia, and West. Aus¬ 
tralia. Australasian botanical notes II, 
173 
Viola hederacea , 47 
Vitex Lignumvitae, 46 
Vitis, 270 
Watsonia, 178 
Weimer, J. L. (See L. L. Harter, 89, 245) 
Weimer, J. L., and L. L. Harter. Influ¬ 
ence of temperature on the pectinase 
production of different species of Rhizo- 
pus, 127; Pectinase in the spores of Rhizo- 
pus, 167 
Weinmannia sylvicola, 530 
Weymouthia Billardieri, 530 
Wheat, the availability of iron in nutrient 
solutions for, 203; a comparative study 
of sand and solution cultures of Marquis, 
18; the effect of the hydrogen ion on the 
protoplasm of the root hairs of, 211; opti¬ 
mum soil-moisture conditions for, 134; 
some effects of physiological conditions 
on genetic characters of, 275 
Wolffla, 340 
Wormia alata, 40 
Xanthorrhoea sp., 49, 176, 180 
Xanthostemon pubescens , 44 
Xylomelum, 54 
Yeast, estimation of maltose by fermenta¬ 
tion with, 291 
Young, W. J. The formation and degen¬ 
eration of germ cells in the potato, 325 
Yucca, chromosomes of, 352 
Yuncker, T. G. Revision of the South 
American species of Cuscuta II, 1 
Zygnemaceae, life cycle of, 392 
