INDEX 
643 
Pearce, L., see Brown, W. H., 462. 
Pearl, R. and Surface, F. M. Growth 
and Variation in Maize. 222. 
Pease, F. G., see Adams, W. S., 391. 
'Phase' in band spectra (Uhler), 487. 
Phoradendron (Trelease), 30. 
Photographic and photovisual magnitude, 
absolute scales of (Seares), 309. 
Photographic determination of stellar par- 
allaxes, 187. 
Photometry, problems in (Stebbins), 259. 
Pigeons, sex ratio, and habits (Cole and 
Kirkpatrick), 354. 
Planetary nebula, line 4686 A in (Wright), 
266, 590. 
Podomitrium malaccense (Steph.) (Camp- 
bell), 36. 
PoGUE, F. E. The turquois, 185. 
Point sets and allied Cremona groups 
(Coble), 245. 
Polar bodies, do not develop (Conklin), 491. 
Pole effect in iron arc (St. John and Bab- 
cock), 295. 
Polycythaemia, role of liver (Lamson), 521. 
Potassium ammono argenate, barate, cal- 
ciate, and sodate (Franklin), 65. 
Potawatomi, linguistic classification of 
(Michelson), 450. 
Potentials at junction of salt solution 
(Maclnnes), 526. 
Praseodymium, atomic weight of (Baxter 
and Stewart), 77. 
Pressure, effect on polymorphic transitions 
of solids (Bridgman), 513. 
Proper motions, nebular (Curtis), 10. 
Proper motions, stellar, and radial veloci- 
ties (Kapteyn and Adams), 14. 
Protection against bacterial infection (Bull), 
545. 
Prout's hypothesis (Harkins and Wilson), 
276. 
Rabbit, English (Castle and Hadley), 39. 
Radial velocities in Orion nebula (Frost), 
416. 
Radial velocities, nebulae in Magellanic 
clouds (Wilson), 183. 
Radial velocities of nebulae (Campbell 
and Moore), 496. 
Radial velocities of nebulae (Campbell), 8. 
Radial velocities, stellar, and proper mo- 
tions (Kapteyn and Adams), 14. 
Radial velocities, the more distant stars 
/Adams), 417. 
Radiation, solar constant (Abbot, Fowle, 
and Aldrich), 331. 
Rat, trypanosoma brucei in (Erdmann), 
504. 
Read, J. W., see Washburn, E. W., 191. 
Reef limestone formation (Cary), 285. 
Regeneration experiments on Cassiopea 
(Gary), 611. 
Relationship, classificatory system of 
(Lowie), 346. 
Renal lesions, produced by arsenicals 
(Pearce and Brown), 463. 
Report on the autumn meeting (1914), 55, 
Report on the annual meeting (1915), 322. 
Report on the autumn meeting (1915), 633, 
Reproduction, asexual, heredity of,in Hydra 
viridis (Lashley), 298. 
Respiratory exchange, methods for deter- 
mining (Carpenter), 602, 
Richards, T, W. The Compressibilities 
of the Elements and Their Relations 
to other Properties, 411. 
Richards, T. W. and Coombs, L. B. The 
Determination of Surface-Tension, 
404. 
Ring-Dove, color vision in (Yerkes), 117. 
Rocks, potassium and magnesium, sodinm 
and iron, in igneous (Washington) 574. 
Rohde, a. Vividiffusion Experiments on 
the Ammonia of the Circulating 
Blood, 357. 
Roth, P., see Benedict, F. G., 100. 
Ruling and performance of a ten-inch 
diffraction grating (Michelson), 396. 
Salt action, antagonistic (Loeb), 439. 
Salt action, mechanism of antagonistic 
(Loeb), 473. 
San Diego anthropological exhibit 
(Hrdlicka), 407. 
Scale for mental ability (Yerkes), 114. 
Scales of photographic and photovisual 
magnitude (Seares), 309. 
ScHLESiNGER, F. Spherical Aberration in 
Astronomical Objectives due to 
Changes of Temperature, 13. 
Schuchert, C. The Basal Silurian For- 
mations of Eastern North America, 
359. 
Seares, F. H, A Notation for Use in the 
Discussion of Star Colors, 481. 
. Absolute Scale of Photographic 
and Photovisual Magnitude, 309. 
Seares, F. H. and Shapley, H. Distri- 
bution of Colors /imong the Stars of 
N. G. C. 1647 and M 67, 483. 
Self-Sterility (East), 95. 
Senior, J. K,, see Stieglitz, J., 207. 
Series, convergence of (MacMillan), 437. 
Sex ratio in pigeons (Cole and Kirkpatrick), 
354. 
Shapley, H. Second Type Stars of Low 
Mean Density, 459. 
Shapley, H, and Shapley, M. B. The 
Light Curve of XX Cygni as a Con- 
tribution to the Study of Cepheid 
Variation, 452. 
Shapley, H., see Seares, F. H., 483. 
Shapley, M. B., see Shapley, H., 452. 
Sharp, L. T. Salts, Soil Colloids, and 
Soils, 563. 
Shells, Brachiopod (Clarke and Wheeler), 
262. 
Silurian Formations of Eastern North 
America (Schuchert), 359. 
Sky, dark marking of (Barnard), 394, 
Smith, H. M,, see Benedict, 102. 
Snails of genus To (Adams), 632. 
