758 
INDEX 
Rocks, of Philippine Islands flddings and 
Morley), 531. 
Root, F. M., see Mast, S. O., 188. 
Roots, excretion of acids (Haas), 561. 
Roots of integral functions (Porter), 247, 
335. 
Rose, J. N. Recent Explorations in the 
Cactus Deserts of South America, 73. 
Rotation of a nebula (Hubble), 230. 
Rotation of nebula N. G. C. 4594 (Pease), 
517. 
RouiLLER, C. A. S)aithesis of the Base 
CSH4ON2 Derived from Methyl-Amino- 
methyl-3, 4-Dihydroxyphenylcarbinol, 
464. 
Rowland's solar spectrum wave-lengths (St. 
John), 226. 
RuEDEMANN, R. On the Presence of a 
Median Eye in Trilobites, 234. 
Russell, C. P., see Hegner, R. W., 356. 
Russell, H. N. On the Albedo of the 
Planets and Their Satellites, 74. 
Salt antagonism in gelatine (Fenn), 534. 
Salt effect in diffusion through membrane 
(Loeb), 511. 
San Juan Mountains, Col., geographic his- 
tory (Atwood and Mather), 177. 
Sandstone, fluviatile origin of Old Red 
(Barrell), 496. 
Saturn, monochromatic photography of 
(Wood), 109. 
Sayles, R. W. Banded Glacial Slates of 
Permo-Carboniferous Age, Showing 
Possible Seasonal Variations in Deposi- 
tion, 167. 
Schuchert, C. The Problem of Continental 
Fracturing and Diastrophism in Oce- 
anica, 407. 
. The Earliest Fresh-water Anthro- 
pods, 726. 
Sea Water, equilibrium between acids and 
bases (Henderson and Cohn), 618, 
Sea Water, physiological effects (McClen- 
don, 689. 
Sea-anemones, behavior of (Parker), 450. 
Sea-anemones, effectors of (Parker), 385. 
Sea-anemones, locomotion of (Parker), 449 
Sea-anemones, nervous transmission in 
(Parker), 437. 
Sea-anemones, neuromuscular structure of 
(Parker and Titus), 339. 
Sea-anemones, response of tentacles (Par- 
ker), 438. 
Seares, F. H. a Simple Method for De- 
termining the Colors of the Stars, 521. 
. Preliminary Results on the Color of 
Nebulae, 553. 
Seasonal variations, Permo-Carboniferous 
age (Sayles), 167. 
Series, trigonometric (Hardy and Little- 
wood), 583. 
Sex, inheritance and determination (Gold- 
schmidt), 53. 
Sex intergrades (Banta), 578. 
Sex of parthenogenetic frogs (Loeb), 313. 
Shapley, H. Studies of Magnitudes in 
Star Clusters, I. On the Absorption of 
Light in Space, 12. 
. Studies of Magnitudes in Star Clus- 
ters. 11. On the Sequence of Spectral 
Types in Stellar Evolution, 15. 
. A Short Period Cepheid with Vari- 
able Spectrum, 132. 
. Discovery of Eight Variable Stellar 
Spectra, 208. 
— — : Studies of Magnitudes in Star Clus- 
ters. III. The Colors of the Brighter 
Stars in Four Globular Systems, 525. 
., see Adams, W. S., 136. 
Size, inheritance of (Castle), 252. 
Skin, failure and revival of pigmentation 
(Jenks), 164. 
Sky radiation, instrument for measuring 
(Abbot and Aldrich), 333. 
Smith, E. F. Further Evidence as to the 
Relation between Crown Gall and 
Cancer, 444. 
Smithsonian Institution, anthropological ex- 
plorations (Hrdlicka), 32. 
Snail faunas, mid-Pacific (Pilsbry), 429. 
Soil chemistry, analysis of peculiar clay 
(Hilgard), 8. 
Solar apex and motion (Perrine), 376. 
Solar atmosphere, minute structure of (Hale 
and Ellerman), 102. 
Solar radiation and terrestrial magnetism 
(Bauer), 24. 
Solar spectrum wave-lengths (St. John) 
226. 
SouDER, W. H., see Millikan, R. A., 19. 
South Pacific islands, petrology of (Iddings), 
413. 
Spectra, channeled grating (Barus), 378. 
Spectra, interferences of reversed and in- 
verted (Barus), 576. 
Spectra, non-reversed of restricted coinci- 
dence (Barus), 614. 
Spectra, quantitative method of classifying 
stellar (Adams), 143. 
Spectra of lithium and calcium. Stark effect 
(Howell), 528. 
Spectroscopy, investigations in stellar 
(Adams), 143, 147, 152, 157. 
Spectrum, path differences for observable 
interferences (Barus), 609. 
Spectrum, variable in short period Cepheid 
(Shapley), 132. 
Spectrum of b Cephei (Adams and Shapley), 
136. 
Spectrum of tungsten (Hull and Rice), 265. 
Spermatozoa, distribution of chondriosomes 
to (Wilson), 321. 
Sphenacodon Marsh (Williston), 650. 
Spinden, H. J. New Data on the Archae- 
ology of Venezuela, 325. 
Spiral nebula, internal motion of (van 
Maanen), 286. 
