MOCK, WBHISOH & 



Phil. Mag. Ser. 6. Vol. 17, PI. IX. 



Waves of current and potentinl-ililWpjuv 

 connexion with n n . It- 1 jml mil: -(.<u i i-ht arc-lump. 

 itiulnYU & Mnvclinnt. 



A 









r / 



V 











/ 









/// 









dfc 



V 







<i<> : 



^^ 













5 



a 





Interval between break and make of circuit in Seconds. 



Relation for critinil ivli^lilinn- ; carbons in normal position, 



potentials reversed. 







Fig. 5. 











T 







1 











1 



1 











1. 



/ 





J 







/^ 









I 



V 





* r '""t """""" 























fff 



/ 







II 







fl/fl/ 



'C 



/• 





\7J/ 





VI 



/*u*.-~. .. 





l^ 





"" ''"'"' /J '"""' 













Interval between break and make of circuit, in seconds. 

 l.'.-l:iii. ii Inr i-riricul flighting aa affected by changes in 

 the relative pusitinn- of the carbons. 









Fig 



7. 





1 





/ 





/ 



l n 



h 



/ 





,^^ 





.: 



*[/ 





/ 







1 



II 



/ 





fire length 19 mm 





I 



1, 



/// 





Q 





