INDEX OF AUTHORS. 371 



Draper (W.). Intensity of the Solar Sp., 113. 



Dubrunfaut. Analysis, 42 ; Flame, 232. 



Duclaux (E.). Analysis, 42 ; Energy in the Sp., 227. 



Dufet (H.). Refraction, 323. 



Duhem. Inversion, 263. 



Dujardin (F.). Apparatus, 36. 



Duner (N. C). Comets, 76. 



Dunstan (TV. R.). Carbon Compounds in general, 156. 



Dupre (A.). Wine, 185. 



Dftirou (L'Abbe). History, 2. 



Edelmann (Th.). Apparatus, 22. 



Eder (J. M.). Apparatus, 26 ; Analysis, 42 ; Absorption, 53 ; Solar in 

 general, 90. 



Egoroff (N.). Oxygen in the Solar Sp., 115; Telluric Rays in the 



Solar Sp., 129 ; Oxygen, 309. 

 Eiger (T. G.). Aurora, 137. 

 Eisenlohr (W.). Dark Lines, 205 ; Diffraction, 211 ; Fluorescent, 



241 ; Iodine, 265 ; Refraction, 323 ; Silver, 334 ; Ultra- Violet, 



348 ; Wave-Lengths, 354. 

 Ellery (R. J.). Aurora, 137. 

 Emsmann (H.). Apparatus, 15, 28; Absorption, 54; Nickel, 299; 



Nitrogen, 301 ; Silver, 334. 



Exgelhart (G.) and Bezold. Fluorescent, 241. 



Engelmann (T. W.). Hematine, 174; Color, 197; Electric, 220; 

 Oxygen, 309. 



Erck (W.). Apparatus, 36 ; Didymium, 209. 



Erdmann. Didymium, 209. 



Esselbach (E.). Wave-Lengths, 354. 



Exner (K.). History, 2 ; Analysis, 42 ; Twinkling of Stars, 132 ; In- 

 terference, 262 ; Lines of the Sp., 274. 



Faura (F.). Eclipses, 107. 



Fave. Analysis, 42 ; Fluorescent, 241 ; Phosphorescent, 313 ; Wave- 

 Lengths, 354. 



Faye. History, 3 ; Apparatus, 37 ; Comets, 70 ; Solar Sp. in general, 

 90; Solar Eclipses, 107; Hydrogen in the Sun, 113; Solar Pro- 

 tuberances, 118; Solar Rotation, 124; Solar Storms, 124; Sun- 

 Spots, 125 ; Aurora, 138. 



Ferrari. Solar Protuberances, 118. 



