ERRATA. 

 Proceedijigs Vol. XXI n". 8. 



Page 1066, line 1 from bottom: For "and" read "for". 



Page 1067, line 2: For "(his ceases after some time. When the 

 voltage is raised further", read "this ceases after some 

 time. The wall of the bulb however has got covered by 

 a gray-blue layer. When the voltage is raised further," 



Page 1067, line 3: For "glass" read "deposit". 



Page 1067, line 4: For "layer is vaporized" read "is formed". 

 For "By this vaporized material the bulb wall becomes" 

 read "By this vaporising of material however the bulb 

 wall becomes". 



Page 1067, line 5: For "Now this" read "so that the" 



Page 1069, line 14 from bottom- For "hydrogen" read "water- 

 vapour". 



Page 1069, line 12 from bottom: For "volume/" read "volu- 

 meter ƒ". 



Page 1071, line 12 from bottom: For "the oxides do not remain 

 therefore oxides" read "the oxide dissolves in the glass". 



Page 1072, line 19: For "G. conclusions" read "G. concluding 

 remarks". 



Page 1073, lines 2 and 3 from bottom: For "25, 661 (1916). 26, 

 595 (1917)" read "19, 958 (1916), 20, 1136 (1917)". 



Page 1074, lines 13 and 14: For "that part of the troublesome 

 gases in a glow-lamp are only liberated" read "that 

 only a part of the troublesome gases in a glowlamp is 

 liberated". 



Page 1074, line 19 from bottom: Fo r "Cn, (POj," read "Ca, (PO,)»". 



Page 1074, line 18 fi-om bottom: For "magnesium-sulfate" read 

 "magnesium-aluminate". 



Page 1074, lines 3 and 2 from bottom: For "Thus the CaO — 

 when such a silicate is used — from the glass will be 

 • . sublimated" read "Thus the CaO from the glass — 

 when such a silicate is used — will be sublimated". 



Page 1075, line 23: For "gradual" read "after some time". 



