INDEX 
767 
United States, gravimetric survey of (Bowie), 
171. 
United States, physiographic subdivision of 
(Fenneman), 17. 
van der Waal's equation modified (Keyes), 
323. 
VAN Maanen, a. The Parallax of the 
Planetary Nebula N. G. C. 7662, 133. 
Variability of germ cells of sea urchins 
(Goldfarb), 241. 
Vascular plants, classification of (Berry), 
330. 
Vasectomized male mice as indicators (Lit- 
tle), 186. 
Veblen, O. On the Deformation of an 
N-Cell, 654. 
ViCARi, E. M., see MacDowell, E. C, 577. 
ViNAL, G. W., see Rosa, E. B., 59. 
Viscosity, laws of (Michelson), 319. 
Volcanic islands, isostatic subsidence of 
(Davis), 649 
Voltameter, silver, for the measurement of 
electric current (Rosa and Vinal), 59. 
Warner, D. E., see Harris, J. A., 237. 
Washburn, E. W. Two laws Governing 
the Ionization of Strong Electrolytes in 
Dilute Solutions and a New Rule for 
Determining Equivalent Conductance 
at Infinite Dilution Derived from Con- 
ductivity Measurements with Extreme- 
ly Diluted Solutions of Potassium 
Chlorite, 569. 
Water and dry matter in the leaves of corn 
and sorghums (Miller), 427. 
Water in the deeper portions of the sub- 
soil (Alway and McDole), 257. 
Wave-lengths, standard international (St. 
John and Babcock), 505. 
Webster, D. L., and Clark, H. The In- 
tensities of X-rays of the L Series, 181. 
Wehnelt cathodes, loss in energy of (Wilson), 
426. 
Wheeler, W. M. The Phylogenetic De- 
velopment of Subapterous and Apterous 
Castes in the Formicidae, 109. 
White, H. S., see Cole, F. N., 197. 
Wilson, W. The Loss in Energy of Weh- 
nelt Cathodes by Electron Emission, 
426. 
Wind action in geology (Keyes), 33. 
X-rays of the L series (Webster and Clark), 
181. 
X-ray spectra, Moseley's law (Uhler), 88. 
X-rays, structure of chalcopyrite (Burdick 
and Ellis), 644. 
Zea tunicata and zea ramosa, hybrids of 
(Collins), 345. 
Zeleny, C. The Effect of Degree of In- 
jury, Level of Cut and Time within the 
Regenerative Cycle upon the Rate of 
Regeneration, 211. 
Zuni chronology (Spier), 280. 
