INDEX. 



195 



Iron, behaviour in sun, 24. 

 distribution in epace, 142. 

 line of, 1474, 35. 

 spectra of, 32, 34. 

 Zeeman effect, 112. 



J. 



Jewell, absorption phenomena. 103, 



104. 



atoms, vibration of, 103. 

 dissociation hypothesis, 103, 147. 

 pressure and wave-length, 101. 



Kapteyn, proper motion, 139. 

 Kayser and Runge, series, 87, 97, 183. 

 Kayser, hydrogen, new series, 59, 98. 



molecules, complexity of, 100. 

 Kirchhoff's theory, 41. 



Lane, Homer, temperature of sun, 151. 

 Larmor, Zeeman etfect, 110. 

 Law, periodic, 165, 176. 

 Layer, absorbing, Arcturus, 52. 



Capella, 52. 



sun, 52. 



a-Cygni, 53, 80. 



Lea, Sheridan, protoplasm, 172. 

 Lines, basic, 77. 



enhanced, 57, 177. 



long and short, 22. 



proto-metallic, 57. 



Liquids and metals, differences be- 

 tween, 160. 



path of molecules in, 19. 

 Lithium, enhanced lines, 32. 

 Liveing and Dewar, carbon flutings, 

 75. 



series, law of, 86. 

 Lorentz, Zeeman effect, 110. 



Magnesium and periodic law, 176. 



flutings of, 83. 



in stars, 75. 



proto-, behaviour of, 35, 64. 



series in, 97. 

 Magnetism and spectral lines, 109, 112. 



field of, ions, 110. 



perturbations of lines, 109, 110. 

 Marignac, de, yttria, 117. 

 Markabian stars, 70. 

 Mascart, 12. 



McClean, classification, stellar, 60, 67, 

 141. 



oxygen in stars, 60. 



star distribution and Milky Way, 



131. 



Melting-point and series, 93, 97. 

 Mendeleef, periodic law, 94, 165. 

 Mercury, spectrum of, 76. 

 Metals and liquids, differences be- 

 tween, 160. 



dissociation of, 81. 



proto-, 57. 



without series, 97. 

 Meyer, atomic volumes, 165. 

 Milky Way, 124. 



and nebulae, 127, 136. 



and novse, 137. 



and star clusters, 128. 



distribution, 125, 1^9, 131, 132, 141. 



Gould, 125. 



split in, 124. 

 Mitscherlich, spectra of compounds, 



20. 

 Mohler and Humphreys, pressure and 



wave-length, 101, 105. 

 Molecule, yttria, 118. 

 Molecules, combination of, 74. 



complexity of, 99, 190. 



composition of, 171. 



diatomic, 18. 



dissociation of, 73. 



in gases, 19. 



masses of, 182. 



path of, 18, 19, 29. 

 Monck, 139. 



Motions, proper, and stellar spectra, 

 140. 



proper, and temperature, 139. 

 Murray, Dr., stellar type names, 70. 



N. 



Nebulse and Milky Way, 127, 136, 143. 



and stars, 132. 



distribution of, 136. 



origin of, 46. 



planetary, 127, 128, 136, 143. 



spectra of', 121. 

 Neovius, oxygen, 180. 

 Newlands, periodic law, 165. 

 Nitrogen, spectra of, 31, 61, 86. 

 Nova Aurigae, 138. 



duplicity of, 138. 

 Novse and Milky Way, 137. 



distribution of, 137. 



genesis of, 137. 



number of, 137. 



spectra of, 138. 



O. 



Orion, stars in, temperature of, 80. 

 O 2 



