364 
INDEX 
Datura, inheritance in (Blakeslee), 116. 
Datura, mutant in (Blakeslee), 148. 
Dempster, A. J. Positive Ray Analysis 
of Magnesium, 45. 
Diapason, energy content (Barus), 47. 
Dickson, L. E. Quaternions and Their 
Generalizations, 109. 
Diet, effect on growth (Osborne and Men- 
del), 157. 
Differential equations (Stouffer), 273; 
(Hille), 303. 
Differential invariants (Glenn), 276. 
Differential thermometer (Menzies), 81. 
Diffusion of air through water (Barus), 
133. 
Digestibility of flours (Langworthy and 
Holmes), 119. 
Drosophila, fourth chromosome (Bridges), 
186. 
Drosophila, mutant genes (Bridges), 127. 
Drosophila, rearrangement of genes (Stur- 
tevant), 235. 
Duane, W. On the Calculation of the 
X-Ray Absorption Frequencies of 
the Chemical Elements, 260. 
. On the Calculation of the X-Ray 
Absorption Frequencies of the Chem- 
ical Elements (Second Note), 267. 
Duane, W., Palmer, H. H., and Yeh, 
Chi-Sun. A Remeasurement of the 
Radiation Constant, h, by Means of 
X-Rays, 237. 
Duncan, J. C. Changes Observed in the 
Crab Nebula in Taurus, 179. 
Ear, physics of (Minton), 221. 
Ebullioscopy (Menzies and Wright), 77. 
Economic conversion factor of energy 
(Lotka), 192. 
Editorial Note, 251. 
Egg production predicted (Harris et al.), 
213. 
Einstein fields (Eisenhart), 328. 
Eisenhart, L. P. Einstein Static Fields 
Admitting a Group G 2 of Continuous 
Transformations into Themselves, 
328. 
Electric conduction (Bridgman), 299. 
Electrometer (Barus), 242. 
Electron mobilities (Loeb), 307. 
Electron reflection from metals (Millikan 
and Barber), 13. 
Electrons, attachment to molecules 
(Loeb), 5. 
Ellinger, T. The Influence of Age on 
Fertility in Swine, 134. 
Energy, conversion factors (Lotka), 192. 
Equilibria (Lotka), 168. 
Evans, G. C. Problems of Potential 
Theory, 89. 
Epidemiology (Flexner and Amoss), 319. 
Feeding experiments (Osborne and Men- 
del), 157; (Sherman et al.), 279. 
Fertility, influence of age (EHinger), 134. 
Feexner, S., and Amoss, H. L. A Physi- 
cal Basis for Epidemiology, 319. 
Flour, milling and digestibility (Lang- 
worthy and Holmes), 119. 
Fowls, egg production of (Harris et ah), 213 
Fox, E. L., see Benedict, F. G., 154. 
Fulton, J. F., Jr. Novocaine as a Sub- 
stitute for Curare, 114. 
Functional, average of (Wiener), 235, 294_ 
Gases in solutions (Van Slyke), 229. 
Gelatin products (Van Slyke and Hiller),. 
185. 
Genes in Drosophila (Bridges), 127 ; 
(Sturtevant), 235. 
Geodesy and geology (Bowie), 23. 
Geologic conclusions from geodesy 
(Bowie), 23. 
Geometric systems (Bennett), 84. 
Girls, basal metabolism (Benedict et al.),. 
10. 
Glenn, O. E. An Algorism for Differ- 
ential Invariant Theory, 276. 
Globe, mutant in Datura (Blakeslee), 148. 
Goodspeed, T. H., see Setchell, W. A., 50. 
Gravitational theory (Eisenhart), 328. 
Groups of order pq 2 (Miller), 146. 
Group theory (Miller), 325. 
Growth curves (Reed), 311. 
Growth on various diets (Osborne and* 
Mendel), 157. 
Guernsey, S. J., see Kidder, A. V., 69. 
h, measurement of (Duane et cl.), 237. 
Haee, E. H. The Peltier Effect, 62. 
. Thermo-Electric Action aind Ther- 
mal Conduction in Metals: A Sum- 
mary, 98. 
Harris, J. A., and Sinnott, E. W. The 
Vascular Anatomy of Normal and 
Variant Seedlings of Phaseolus vul- 
garis, 35. 
Harris, J. A., Kirkpatrick, W. F., and 
BlakeseEE, A. F. The Prediction 
of Annual Egg Production from the 
Records of Limited Periods, 213. 
Hearing, sensitivity (Minton), 221. 
Heat conduction (Hall), 98. 
Hendry, M. F., see Benedict, F. G., 10. 
Hille, E. An Integral Equality and Its 
Applications, 303. 
Hiller, A., see Van Slyke, D. D., 185. 
Holmes, A. D., see Langworthy, C. F.,. 
119. 
Huntington, E. V. The Mathematical 
Theory of the Apportionment of 
Representatives, 123. 
Hydrogen alloy, conductivity (Smith), 28. 
Hydrolysis of gelatin (Van Slyke and 
Hiller), 185. 
Inheritance in Datura (Blakeslee), 116. 
Inheritance in Drosophila (Bridges), 186; 
(Lancefield and Metz), 225. 
