1 7 



6h 

 5 



4 

 3 



Z 



s> 



i 













































































































































>: 









































































































































f 













































/ 



^> 













■1 







-# — 



-X — 







Ut 



ftj 



V 



M 





J M+ 



Negative 

 Glow. 



3 4 5 6 7 

 Faraday Dark Space. 



Stria. 



10 II 12 

 Stria. 



1 3 cms. 



Diagram No. 3. Discharge in Air. Pressure 0-3 mm. Magnetic Field 29 - 4. 



1 2 34 56 7 8 9 10 II 12 \icms 

 Striae. Faraday Dark Space. Negative Glow. Crookes Dark 



Space. 



Diagham No. 4. Discharge in Air. Pressure 0-11 mm. Magnetic Eield 22-8. 



