INDEX 
365 
Inheritance in Trypanosoma (Taliaferro), 
138, 163. 
Integral equality (Htille), 303. 
Integral solutions of equations (Blich- 
feldt), 317. 
Integrals in quantum theory (Kemble), 
283. 
Interferometric measurements of angles 
(Michelson and Pease), 143; (Pease), 
177. 
Interferometry (Barus), 71. 
Invariant theory (Glenn), 276. 
Ionization theory (Kendall), 56. 
Ionizing potential of metals (Millikan and 
Barber), 13. 
Ions, mobility of (Loeb), 5. 
Isomorphisms (Miller), 325. 
Isostasy (Bowie), 23. 
Ives, H. E., see Arnold, H. D., 323. 
Johnson, T. B., and Brown, E. B., 
Studies on Catalysis. I. The Re- 
duction of Uracil to Hydrouracil, 75. 
Kemble, E. C. The Evaluation of 
Quantum Integrals, 283. 
Kendall, J. The Correlation of Com- 
pound Formation, Ionization and 
Solubility in Solutions, Outline of a 
Modified Ionization Theory, 56. 
Kidder, A. V., and Guernsey, S. J. 
Peabody Museum Arizona Explor- 
ation, 1920, 69. 
Kirkpatrick, W. F., see Harris, J. A., 213. 
LaMer, V. K., see Sherman, H. C, 279. 
Lancefield, R. C, and Metz, C. W. 
Non-Disjunction and the Chromo- 
some Relationships of Drosophila 
Willistoni, 225. 
Lang worthy, C. F., and Holmes, A. D. 
The Effect of a Variation in Milling 
on the Digestibility of Wheat Flours, 
119. 
Lindgren, W. Melanovanadite, A New 
Mineral from Mina Ragra, Pasco 
Peru, 249. 
Linear equations (Blichfeldt), 317. 
Linkage variation (Sturtevant), 181. 
Liquids, viscosity (Phillips), 172. 
Loeb, L. B. The Attachment of Elec- 
trons to Neutral Molecules in Air, 5. 
. The Mobilities of Electrons, 307. 
Loeb, L. B., and Schmiedeskamp, L. 
The Destruction of Phosphorescent 
Zinc Sulfides by Ultra Violet Light, 
202. 
Lotka, A. J. Note on Moving Equilibra, 
168. 
. Note on the Economic Con- 
version Factors of Energy, 192. 
McDonald, J. H. On the Roots of 
Bessel's Functions, 66. 
Magnesium, positive rays (Dempster), 45. 
Magnitudes in star clusters (Shapley and 
Mayberry), 152. 
Manometric interferometry (Barus), 71. 
Mayberry, B. W., see Shapley, H., 152. 
Melanovanadite (Lindgren), 249. 
Mendel, L. B., see Osborne, T. B., 157. 
Menzies, A. W. C. A Differential 
Thermometer, 81. 
Menzies, A. C. W., and Wright, S. L. 
The Application of a Differential 
Thermometer in Ebullioscopy, 77. 
Merriam, J. C. Origin and History of 
the Bear Family in the Western 
Hemisphere, with Particular Refer- 
ence to the Relation of This Question 
to Problems of Geographical History, 
183. 
Messier 33, motion in (Van Maanen), 1. 
Metabolism of girls (Benedict et al.), 10. 
Metals, conductivity (Hall), 98. 
Metz, C. W., see Lancefield, R. C, 225. 
Michelson, A. A., and Pease, F. G. 
Measurement of the Diameter of 
Alpha-Orionis by the Interferometer, 
143. 
Miller, G. A. An Overlooked Infinite 
System of Groups of Order pq 2 , 146. 
. Group of Isomorphisms of a 
Transitive Substitution Group, 325. 
Millikan, R. A. The Further Extension 
of the Ultra-violet Spectrum and the 
Progression with Atomic Number 
of the Spectra of Light Elements, 289. 
Millikan, R. A., and Barber, I. F. On 
the Reflection and Re-emission of 
Electrons from Metal Surfaces: and 
a Method of Measuring the Ionizing 
Potential of Such Surfaces, 13. 
Milling, effect on digestibility (Lang- 
worthy and Holmes), 119. 
MinTon, J. P. Some Physical Character 
istics of the Ear, 221. 
Modular functions (Coble), 245, 334. 
Morris, E. H. Chronology of the San 
Juan Area, 18. 
Moving equilibria (Lotka), 168. 
Mutant in Datura (Blakeslee), 148. 
Mutants in Drosophila (Sturtevant), 235. 
National Academy of Sciences, list 
of publications, 339. 
National Research Council, list of 
publications, 350. 
Nebulae, motions in (Van Maanen), 1; 
(Duncan), 179. 
Nicotiana tabacum, crossing (Setchell et 
al.), 50. 
Non-disjunction in Drosophila (Bridges), 
186; (Lancefield and Metz), 225. 
Normalized geometric systems (Bennett), 
84. 
Novocaine for curare (Fulton), 114. 
Number systems (Dickson), 109. 
