INDEX OF AUTHORS. 375 



Hasselberg (B.). Apparatus, 29; Comets, 74, 78; Acetylene, 160; 



Hydrogen, 258 ; Maps, 287 ; Metals, 291 ; Nitrogen, 301 ; Wave- 



Lengths, 35-4. 

 Hastings (C. S.)- Solar in general, 91 ; Glass, 249; Heat, 252. 

 Hautefeuille (P.) et Chappuis (J.). Flame, 234. 

 Heinrichs. Distribution, 217. 



Helmiioltz (H.). Carbon Compounds, 156 ; Dispersion, 212 ; Refrac- 

 tion, 324. 

 Hennessey (J. B. N.). Solar Atmosphere, 100 ; Displacement in the 



Solar Sp., 106 ; Red End of the Solar Sp., 123 ; White Lines in 



the Solar Sp., 132 ; Atmospheric Sp., 134. 

 Hennig (R.). Apparatus, 29 ; Quantitative Analysis, 50. 

 Henry (L. d'). Light, 272 ; Sodium, 338. 

 Herepath (W. B.). Apparatus, 23. 

 Herschel (A. S.). History, 3 ; Apparatus, 21 ; Analysis, 43 ; Meteors, 



83 ; Eclipses, 107 ; Aurora, 138 ; Carbon, 153 ; Nomenclature, 



305 ; Violet, 348. 

 Herschel (Lieut. John). Nebulae, 85; Solar Protuberances, 118; 



Electric, 221. 

 Herschel (Sir John). History, 3, 4; Solar in general, 91 ; Coal, 168 ; 



Soda, 338. 

 Hesehus (N.). Apparatus, 13. 

 Hesse (O.). Dispersion, 212. 



Heusser (J. C). Analysis, 43 ; High Altitudes, 255. 

 Heynsius (A.) and Campbell (J. F. F.). Absorption, 55 ; Gall, 173. 

 Hilgard (J. E.). Apparatus, 13. 

 Hilger (A.). Apparatus, 14 ; Caryophyllaceae, 167. 

 Hirn(G. A.). Book, 8. 

 Hittorf (W.). Flame, 234, 237. 

 Hock (K.). Apparatus, 11 ; Alkalies, 61 ; Oils, 178. 

 Hoffmann (A. W.). Quinoline-Red, 182. 

 Hofman (J. G.). Apparatus, 28, 32 ; Hydrogen, 258 ; Nitrogen, 302 ; 



Phosphorus, 315. 

 Hoh (Th.). Electric, 221. 

 Holden (E. S.). Aurora, 138 ; Electric, 221. 

 Homann (H.). Astronomical in general, 6Q. 

 Hoorweg (J. L.). Analysis, 43. 

 Hopkinson (J.). Glass, 249 ; Refraction, 324. 



