876 



INDEX. 



Telegraph Key, On the Length of the 

 Time of Contact in the Case of 

 a Quick Tap on a, 818. 



Thaxter, Roland, Preliminary Diag- 

 noses of New Species of La- 

 boulbeniaceae, — VI., 301-318. 



Thermal Conductivity, A Method of 

 Determining, 455-464, 812. 



Thermal Conductivity in Soft Iron 

 between 114° and 204° C, On 

 the Thomson Effect and the 

 Temperature Coefficient of, 833. 



Thermal Conductivity of Lead, 669- 

 689, 812. 



Thermal Expansion of Hydrogen and 

 Carbon Dioxide under Constant 

 Pressure, 115-140. 



Thermo-electric Action, A Theory of, 

 821. 



Thermo-electric Heterogeneity in Cer- 

 tain Alloys, especially German- 

 Silver, 541-574, 811. 



Thermo-Luminescence of Fluorite, 

 The, 585-613. 



Thermometers, A New Method of 

 Standardizing Thermometers be- 

 low 0° C, 449-454, 812. 



Thermometry, A New Fixed Point 

 in, 433-448, 812. 



Thomson Effect and the Temperature 

 Coefficient of Thermal Conduc- 

 tivity in Soft Iron between 114° 

 and 204° C, On the, 833. 



Thomson Effect in Soft Iron, Meas- 

 urements of Various Thermal 

 and Electrical Effects, especially 

 the, 21-55. 



Titanium, The Relative Positions of 

 the Arc and Spark Lines of the 

 Spectra of, 279-300. 



Tomek, W. W. Ritt. von, Death of, 

 807. 



Transition Temperature of Sodic Bro- 

 mide, 433-448. 



Treasurer, Report of, 823. 



Trelease, W., appointed Delegate, 814; 

 Letter from, 822. 



Trowbridge, John, Effect of Mag- 

 netic Field on Production of the 

 X-Rays, 813; Slow Discharges 

 of Electricity, 809 ; Electric Dis- 

 charges. (I) Slow Moving Elec- 

 trical Luminous Effects ; (II) 

 Magnetic Field and Electric Dis- 

 charges, 627-644, 810. 



United States, Descriptions of Sper- 

 matophytes from the Southwest- 

 ern, 233-270. 



University of Illinois, Invitation from, 

 807. 



Variability of Drosophila, The Effects 

 of Selection upon, 729-786, 818. 



Vibrations of a Rubbed String, The 

 Longitudinal, 691-727, 809, 818. 



Vitruvius, On the Language of, 465- 

 502, 812. 



Ware, William R., Notice of J. M. 

 Barnard, 811, 837. 



Warren (C. M.) Committee, Report 

 of, 828. 



Warren (C. M.) Fund, 824 ; Appro- 

 priation from the Income of, 

 830 ; Papers published by Aid 

 of, 87. 



Warren, Herbert Langford, elected 

 Resident Fellow, 80S ; accepts 

 Fellowship, 810. 



Wave Lengths, Short, The Spectrum 

 of Hydrogen in the Schumann 

 Region of, 811. 



Wells, R. C. See Richards, T. W., 

 and Wells, R. C. 



Wendell, Barrett, The Universities 

 of France, 821. 



Wentworth, H. A. See Goodwin, 

 H. M., and Wentworth, H. A. 



Wheeler, P. See Lewis, G. N., and 

 Wheeler, P. 



Williston, Samuel, accepts Fellow- 

 ship, 807. 



Wood, Edward S., Death of, 807. 



Wood, R. W., The Fluorescence of 

 Sodium Vapor and the Reso- 

 nance Radiation of Electrons, 

 809. 



Wright, J. II., Studies in the text of 

 Plato's Republic, 832. 



Zexmenia, A Revision of the Genus, 



141-167. 

 Zinc, The Relative Positions of the 



Arc and Spark Lines of the 



Spectra of, 279-300. 

 Zoological Laboratory of the Museum 



of Comparative Zoology at 



Harvard College, E. L. Mark, 



Director, Contributions from, 



729. 



