298 



INDEX 



New mollusks of the genus Aclis 



from the North Atlantic, 163 



* New species of shells from Ber- 

 muda, 95 



* The recent and fossil mollusks of 



the genus Alabina from the west 

 coast of Amer., 96 



* The recent and fossil mollusks of 



the genus Bittium from the west 

 coast of Amer., 163 



*— — Recent and fossil mollusks of the 

 genus Diastoma from the west 

 coast of Amer., 135 



* West Amer. Mollusks of the 



genus Eumeta, 135 



*Bastin, E. S. Geology of the peg- 

 matites and associated rocks of 

 Me., inch feldspar, quartz, mica, 

 and gem deposits, 239 



Some features of graphite in the 



U. S., 44 



*Bauer, L. A. Magnetic chart errors 

 and secular changes in the Indian 

 Ocean, 178 



*Bates, C. G. Windbreaks: their influ- 

 ence and value, 92 



*Blair, W. R. Free air data at Mount 

 Weather for Jan., Feb. and Mar., 

 1911, 153 



* Summary of the free air data at 



Mount Weather for the three years, 

 July 1, 1907 to June 30, 1910, 152 



*Bowie, W. Primary base lines at 

 Staunton, Tex. and Deming, N. M., 

 75 



*Bransky, O. E. Diffusion of crude 

 petroleum through fuller's earth, 

 with notes on its geologic signifi- 

 cance, 185 



*Breazeale, J. F. Translocation of 

 plant food and elaboration of plant 

 material in wheat seedings, 123 



Briggs, L. J. The wilting coefficient 

 for different plants and its indirect 

 determination, 228 



*Brooks, A. H. Mount McKinley 

 region, Alaska, 235 



Brooks, H. B. Design of deflection 



potentiometers, 283 

 Deflection potentiometers for cur- 

 rent and voltage measurements, 283 

 *Brown, N. A. Crown-gall of plants: 



its cause and remedy, 91 

 *Bryan, A. H. The determination of 



sugars in grain and cattle food, 122 

 *Bryan, H. The electrical bridge for 



the determination of soluble salts 



in soil, 154 

 Buckingham, E. The "correction for 



emergent stem" of the mercurial 



thermometer, 167 

 * On the computation of the con- 

 stant C 2 of Planck's equation by an 



extension of Paschen's method of 



equal ordinates, 33 

 The reheat factor in steam-turbine 



design, 147 

 Thrust balancing in direct-con- 

 nected, marine steam turbines, 198 

 *Burger, W. H. The measurement of 



the flexure of pendulum supports 



with the interferometer, 76 

 Burgess, G. K. The melting points of 



the chemical elements, 16 

 Note on graphic solutions of Wien's 



spectral equation, 105 

 * Note on the temperature scale bet. 



100° and 500° C, 34 

 * On the constancy of the sulphur 



boiling point, 34 

 *Burns, Findley. Olympic National 



Forest; its resources and their 



management, 161 

 *Busck, A. Descriptions of Tineoid 



moths (microlepidoptera) from 



South Amer., 244 

 * — ■ — Recent biological explorations in 



Panama, 000 

 Butler, B. S. Beaverite, a new 



mineral, 26 

 * Thaumasite from Beaver County, 



Utah, 37 

 *Cain, J. R. The determination of 



manganese in vanadium and 



chrome-vanadium steels, 85 



