INDEX OF VOL. 15. 
Page 
Absorption of light 78 
Academia del Gimento 35 
Lincei 35 
Address of retiring President, C. Abbe 27 
L. A. Bauer 103 
J. F. Hayford 57 
C. K. Wead 169 
Aerodynamics 42 
Air, A compressible gas 34 
— Evaporation of 39 
— Mechanical properties of 34 
— Oxidation of 39 
— thermometer 84 
Ancient societies for research in me- 
teorology 34 
Anthropological Society 134 
Aqueous vapor in air 49 
atmosphere 39 
Arc lamps, Arons’ 90 
Argon, Discovery of 40 
Arons’ arc lamp 90 
Atmosphere, Chemical composition of. 34 
— Constitution and properties of the 38 
— Solar 98 
— The mechanics of the 42 
— Tides in 48 
— Vortex and wave motions in 49 
Aurora borealis, Spectrum of 41 
Austrian Meteorological Society 50 
Balloon voyage of Barral, Bixio, and 
Glaisher 46 
— work in meteorology 46 
Barometric pressure 53 
Black radiation 80, 85 
Blue Hill Observatory 47 
Box kite 
“Bulletin of International Simultan- 
eous Meteorological Observations" 45 
Carbonic acid gas, Discovery of 39 
Calcium 96, 98 
Chromosphere 93, 96, 98, 99 
Cleavite, Helium evolved from 41 
Comets 
Constitution and properties of the 
atmosphere “ s 
“Contributions to our knowledge of 
the weather,” by Prof. H. W. 
Brandes 
Page 
Cooperation of Smithsonian Institu- 
tion and United States Govern- 
ment Meteorologist in study of 
American storms 38 
Curved light rays, Rummer’s theory 
of 93 
Dew-point 39 
Dry-bulb thermometer, Wet- and.... 39 
Dynamic meteorology 42 
Earth, A competent elastic structure. 59 
“Earth, a failing structure,” by J. F. 
Hayford 57 
— not a solid body 63 
Eimbeck, William, Obituary notice of, 
by Edwin Smith 127 
Emission of light 78 
“Equilibrium and motion of solid and 
liquid bodies,” by Prof. H. W. 
Brandes 36 
Evolution of solar system, Laplace 
on 42 
“Fata Morgana” 93 
Fluid resistances 49 
Fluids, Motion of 48 
— vicosity or internal friction of . . 49 
“Folk-Songs, English — Some Conclu- 
sions,” by C. J. Sharp 176 
Gas thermometer 84 
Gauss’s “Theoria Motus” 29 
Gehler’s Physikalisches WOrterbuch. . 37 
Geissler tubes 90 
“Geodetic Evidence of Isostasy, The.” 
by J. F. Hayford 65 
“Geodetic operations in the United 
States, 1903-1906, a Report to 
the Fifteenth General Conference 
of the International Geodetic 
Association,” by O. IT. Tittmann 
and' J. F. Hayford 65 
Geometrical relations of winds to 
storms 38 
“Grammar of Music” 187 
Granite, Resistance of 61 
Hargrave or box-kite 46 
Harmonics 181 
(189) 
