422 
INDEX 
Laterite, metalliferous, in New Caledonia 
(Davis), 275. 
Lavas, analyses of (Iddings and Morley), 
110. 
Lead, isotopic (Clarke), 181. 
Lead isotopes, refractive index of nitrates of 
(Richards and Schumb), 386. 
Lehmer, D. N. Arithmetical Theory of 
Certain Hurwitzian Continued Frac- 
tions, 214. 
. On Jacobi's Extension of the Contin- 
ued Fraction Algorithm, 360. 
Lepadid barnacles as derived from the 
Phyllopods (Clarke), 384. 
Lewis, G. N., Eastman, E. D., and Rode- 
bush, W. H. The Heat Capacity of 
Electro-Positive Metals and the Ther- 
mal Energy of Free Electrons, 25. 
Light, effect on melanophores (Bray), 58. 
Light, phosphorescent (Nichols and Howes), 
305. 
Lipman, C. B. and Waynick, D. D. A 
Bacteriological Study of the Soil of 
Loggerhead Key, Tortugas, Florida, 
232. 
Loeb, J. Further Experiments on the 
Sex of Parthenogenetic Frogs, 60. 
. The Law Controlling the Quantity 
and Rate of Regeneration, 117. 
Magnetic axis, location of sun's (Seares, 
van Maanen, and Ellerman), 4. 
Magnitudes in star clusters (Shapley), 224. 
Man, growth changes in nervous system 
(Donaldson), 280. 
Maroon — recurrent mutation in Drosophila 
(Bridges), 316. 
Maskelynite (Merrill), 176. 
Mayor, A. G. The Growth-Rate of Samoan 
Coral Reefs, 390. 
McClung, C. E. Possible Action of the 
Sex-Determining Mechanism, 160. 
Measuring the mental strength of an army, 
(Yerkes), 295. 
Mechanism, sex-determining (McClung), 
160. 
Medals, award of, 273. * 
Melanophores of amiurus, reactions of to 
light and adrenalin (Bray), 58. 
Mental condition, effect of starvation on 
(Miles), 152. 
Mental strength of an army (Yerkes), 295. 
Merrill, G. P. Tests for Fluorine and 
Tin in Meteorites with Notes on 
Maskelynite and the Effect of Dry 
Heat on Meteoric Stones, 176. 
Metabolism, effect of starvation on (Bene- 
dict and Roth), 149. 
Metabolism, biometric study of (Harris and 
Benedict), 370. 
Metals, heat capacity of electro-positive 
(Lewis, Eastman and Rodebush), 25. 
Meteoric stones, effect of heat on (Merrill), 
176. 
Meteorites, fluorine and tin in (Merrill), 
176. 
Metric theorems, projective generalization 
of (Green), 346. 
Michelson, A. A. On the Correction of 
Optical Surfaces, 210. 
Miles, W. R. Effects of a Prolonged 
Reduction in Diet on Twenty-Five 
Men. II. Bearing on Neuro-Muscular 
Processes and Mental Condition, 152. 
Miller, G. A. On the a-Holomorphisms of 
a Group, 293. 
Mobilities of ions in air, hydrogen and 
nitrogen (Yen), 91. 
Mobilities of ions in vapors (Yen), 106. 
Moore, R. L. A Characterization of Jor- 
dan Regions by Properties Having No 
Reference to their Boundaries, 364. 
Morley, E. W., see Iddings, J. P., 110. 
Motion, retarded by radiation (Page), 47; 
(Larmor), 334. 
Muscular work, effect of starvation on 
(Smith), 157. 
Mutation in Drosophila (Bridges), 316. 
Myodome chamber of fishes (Allis), 241. 
National Academy of Science, Report of 
the Annual Meeting, 261. 
. Award of Medals, 273. 
. Grants from Trust Funds, 273. 
National Research Council, Report of 
the Committee on Anthropology, 52. 
. Meetings of the Executive Commit- 
tee, 76. 
. Minutes of Executive Board of War 
Organization, 122. 
. Executive Order Issued by the 
President of the United States, May 
11, 1918, 251. 
. Minutes of the Second Meeting of 
the Executive Board of the War Organ- 
ization in Joint Session with the Coun- 
cil of the National Academy of Sci- 
ences, 252. 
. Minutes of Third Meeting of Execu- 
tive Board of War Organization, 256. 
. Minutes of the Meeting of the Ex- 
ecutive Board, 397, 405, 414. 
. Minutes of Joint Meeting of the Ex- 
ecutive Board and the Council of the 
National Academy of Sciences, 410. 
Nebula, rotation and radial velocity in 
andromeda (Pease), 21. 
Nebulae, planetary (van Maanen), 394. 
Nervous system of rat, growth changes in 
(Donaldson), 280. 
Neuro-muscular processes and mental con- 
dition as affected by reduction in diet 
(Miles), 152. 
New Caledonia, metalliferous laterite in 
(Davis), 275. 
Nichols, E. L., and Howes, H. L. Types 
of Phosphorescence, 305. 
Nitrates of lead isotopes (Richards and 
Schumb), 386. 
Nitrogen, partition of non-protein in the 
brain of the gray snapper (Hatai), 19. 
Nivation, importance of as an erosive fac- 
tor (Ekblaw), 288. 
