394 INDEX OF AUTHORS. 



Wolfk (C. H i . Quantitative Analysis, 51 ; Absorption, 60; Alkalies, 

 61; Astronomical in general, 70; Comets, 72, 7:;, 75; Fixed 

 Btars,82; Bun-Spots, 128 ; Fuchsin, 172; [ndigo, 176; Cobalt, 

 L96; Copper, 202; [ron, 269; Liquids, 278. 



Wollastou (Dr.). History, 7; Dark Lines in the Solar Sp., 106; 

 Dark Lines, 206. 



Wright (A. W.). Meteors,83; Aurora, 142; Flame, 239; [ron, 269. 



Wi:..i I I. -I .i V L..nl . Monks, Ht. 



Wii.i.Nri; A.). Analysis, 49; Bromine,148; Acetylene, 161 ; Carbonic 

 Acid, L80; Dispersion, 216; Electric, 225; Flame, 239, 240 ; 

 Fluorescent, 245; Hydrogen, 260; [odine, 267; L the 



Spectrum, 275; Nitrogen, 304; Oxygen, 310. 



Wi ntdeb (J.). Absorption Sp., 60; Ultra-Marine, 184. 



WuNSCH (C. E.). History, 7. 



Wurtz | A. ). History, 7. 



Wyrouboff (G.). Dispersion, 216; Sodium, 339. 



Young (C. A.). Books, L0; Apparatus, 18; Analysis, 49; Comets, 73, 

 75,79; Planets, 88; Solar in general, 99; Bright Lines in the 

 Solar Sp., 102.; Corona,105; Displacement of Solar Sp., L06; 

 Eclipses, 110, 111 ; Sun-Spots, 128 ; Inversion, 26 I ; Nomencla- 

 ture, 305 ; Sodium, 339. 



Young T.). History, 8. 



YUNG(R). Color, 199. 



Zahn. Apparatus, 33, 38; (Quantitative Analysis, 51. 



Zantedbbchi. I [istory, 8 ; Apparatus, 32; Solar in general, 99 ; Lon- 

 gitudinal, 281. 



Zbngeb C. V. . Apparatus, 12, U, 15, 24, 35, 37, .39; Diffraction, 211 ; 

 Light, 273; Dltra-Violet, 350. 



Zenger (K. W.). Analysis, 49; Photography of Solar Sp., 117. 



Zenker W. i. Apparatus, 33 ; Solar Protuberances, 122. 



Zimmi km \nn (G). (Tranium, 347. 



Zollneb F. . Apparatus. 30, 36, •"•7: Astronomical in general, 70; 

 Nebulas, 85 ; Solar in general, 99 ; Corona,105; Dark Lines in 

 the Bolar Sp., 106; Solar Protuberances, 122; Solar Rotation, 

 TJl: Sun-Spots, 129 ; £.urora,142; Dark Lines, 206^ Density, 

 208; Flam.'. 240; Heat, 26^4. 



'/.< »na. ( lomet, 76. 



