588 



INDKX. 



Talbot, M., Podokesaurus holyo- 

 kensis, 469. 



Taylor, T. S., ionization of gases by 

 a-particles from polonium, 249. 



Tennessee geol. survey, 334. 



Thermodynamics, Mills, 458. 



Thomson effect, Cermak, 14S. 



Thornton, W. M., Jr., feldspar ag- 

 gregate of Virginia, 218. 



Trigonometry, Bobbins, 248. 



Tripyramid Mountain, N. H., geol- 

 ogy, Pirsson and Rice, 269 ; petrog- 

 raphy, Pirsson, 405. 



Trowbridge. J., new emission theory 

 of light, 51. 



U 



United States geol. survey, annual 

 report. 234 ; publications, 235. 



production of minerals in 1909, 



Parker, 575 ; of gems and precious 

 stones, Sterrett, 576. 



Van Horn, F. R., new occurrence of 

 pearceite, 518. 



Venezuela, geologic notes on, Ben- 

 drat, 443. 



Vermont geol. survey, 240. 



Victoria, volcanic rocks, Skeats, 80. 



Virginia Piedmont slates, age, Wat- 

 son and Powell, 33. 



Volcanoes of Japan, Friedlander, 



W 



Walther, J., origin and peopling of 

 the deep sea, 55. 



Warren, C. H., chemical composi- 

 tion of parisite, etc., 533. 



Water, sterilization by ultra-violet 

 rays, Helbronner and Reckling- 

 hausen, 76. 



Watson, T. L., age of Virginia Pied- 

 mont slates. 33. 



Waverly, Ohio, deep well, strati- 

 graphy, Bassler, 19. 



Wells, R. C, striiverite, 432, 577. 



West Australia geol. survey, 239, 

 574. 



West Virginia geol. survey, 237, 334. 



Whitlock, H. P., Calcites of New 

 York, 337. 



Wieland, G. R., notes on the armored 

 Dinosauria, 112. 



Williams, H. S., fossil faunas of 

 St. Helen's breccias, 241. 



Williston, S. W., Permian reptiles 

 of New Mexico, 378. 



Wright, F. E., transmission of light 

 through crystal plates, 157. 



Wyoming, Tertiary faunal horizons, 

 Granger, 151. 



Yale Astronomical Observatory, see 



OBSERVATORY. 

 Yellowstone Park, origin of thermal 



waters, Hague, 576. 



von Zittel, K. A., Grundzuge der Pa- 



laontologie, 78. 

 Zoology, Hegner, 83. 



ZOOLOGY. 



Birds, Methods of attracting, Traf- 

 ton, 84. 



Birds and insects, metallic coloring, 

 Michelson, 568. 



Lepidoptera, British Museum, Cata- 

 logue, Hampson, 340. 



Medusas of the World, Mayer, 83. 



Mollusca, British Nudibranchiate, 

 Eliot, 82. 



