L888.] ' 



Electro-chemical Effects on Magnetising Iron. 

 Table C — continued. 



Vol 



E.M.F. in volt, and electro-chemical position of magnetised bar compared with the unmagniti.-ed 

 bar, the positive or negative position of the former being respectively indicated by the signs 

 + and — . 





Column i. 



Column 5. 



Column 6. 



Column 7. 



Column 8. 



Column 9. 



Time from 

 commencement 

 of 



magnetisation. 







Nitric acid 





Nitric cicid 



Nitric acid 



Nitric acid 







250 grs., and 



Nitric acid, 



300 grs., and 



250 grs., and 



200 grs. and 



Ferric chloride and 



potassium 



200 grs., and 



potassium 



potassium 



potassium 



chlorine water. 



chlorate 



water, 



chlorate 



chlorate 



chlorate 









solution 



600 grs. 



solution 



solution 



solution, 









500 grs.' 



1000 grs! 



1C00 grs. 



1000 grs. 





Iron bars. 



Steel bars. 



Iron bars. 



Iron bars. 



Iron bars. 



Iron bars. 



Iron bars. 





j 



II. 



_^ 















_ 



seconds. 



















o-ooo 



o-ooo 



A .AAA 

 U UUU 



A - AAA 

 U UUU 



A • AAA 

 U UUU 



A • AAA 

 U UUU 



A - AAA 

 U UUU 



10 



-0-006 



-0-006 













•^a 



oil 



-0-007 



-0 -009 













Act 



— 0*009 



— *009 













minutes. 

















n 

 X 



-0-009 



-0-007 



i a . Al *i 

 + U Ull 





l A .Al O 



+ U U1.4 



-i_ A • Al A 

 + U U1U 



4- A -AAfi 

 t \J uuo 



o 



£i 



-0-009 



-0*009 



+ U Ulo 



■ A • AA/L 



i A .Al 1 



+ U Ull 



+ U UUO 



t A -AAJ. 



+ U uu-± 



Q 



-0-006 



-0-009 



+ "014 





+ '010 



+ u uuo 



i A • AA 1 

 + U UU+ 



A 

 4< 



-0-006 



-0-006 



+ "018 



i A.AAK 

 + U OOO 



+ '008 





i A -AAQ 



+ U UUo 



5 



-0-006 



-0-008 



+ "027 



+ 0*010 



+ 0*009 



+ * 010 



+ *004 



a 



O 



-0-006 



-0-007 



_l A • A1 Q 

 + U UIO 



j- A • AAQ 



+ u uuy 









7 

 8 



-0-009 

 -0-007 



-0-006 

 -0-006 



+ -014 



+ 0*011 



+ '007 



+ 0*007 



+ *C06 



Q 



y 



-0-009 



-0'005 





i a -A1 A 

 + U U14< 





i A • AA(? 

 + U UUO 





i a 



J-U 



-0-007 



-0-004 





i a -Al "3 

 + U Ulo 



i A • AT A 

 + U U1U 



4- n -hay 



+ "005 





-0-007 



-0-004 





i A .AT A 

 + U U1U 



_i_ A .AT 1 



+ U UJ 1 



a- A -AAQ 

 t u uuy 





10 



-0-005 



--0-003 





+ U UUo 



. i A . AA1 

 + U UU1 



1 A . AAA 



+ u uuy 



+ u uuo 



9A 



-0-004 



-0-003 





4- A -AA^ 

 + U UUO 





_i_ A -AAQ 



T U UW 



+ ' 004 



«o 



-0-002 



-0-003 





■+• U UU* 





+ U UUo 



-i- A • AA-L 

 T U VJKJ-b 



*3A 



-0-002 



— 0-003 





i A .AAR 

 + U UUO 





i A • AAfi 

 + U UUO 



T U KJVO 



uO 





Magnetisation 





■ A . AA£» 



+ U UUO 





i a -AAQ 



+ u uuy 





^tu 





here ceased, 

 the after 





i a .AA*7 

 + U UU/ 





i A -AAQ 



+ u uuy 





4<0 





effect was due 





+ ' 009 





i A «AA*7 



+ u UU/ 





ou 





to residual 





_l A • AAQ 



+ U UUo 









55 

 hours. 





magnetism of 

 the steel. 





+ 0*008 









1 1 







+ -003 





+ 0-007 









1* 







+ -003 













2 







+ -008 













2i 







+ 0-008 













3* 







+ -006 













4 





+ 0-002 













12 





+ -006 













16 





•r -003 













20 





+ 0-002 













24 





+ 0-002 













40 





+ 0-002 













