1888.] Electro-chemical Effects on Magnetising Iron. 159 



Table C — continued. 



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

 the unmagnetised bar, the positive or negative position of the former being 

 respectively indicated by the signs + and — . 





Column 12. 



Column 13. 



Column 14. 



Column 15. 



Time from 

















commence- 

















ment of 

 magnetisa- 



Cupric chloride. 



Cupric sulphate. 



Cupric 

 nitrate. 



Cupric acetate. 



tion. 

















Iron bars. 



Steel bars. 



Iron bars. 



Steel bars. 



Iron bars. 



Iron bars. 



Steel bars 





I. 



II. 



I. 



II. 



— 



I. 



II. 



seconds. 

















A 

 U 



A 'C\C\(\ 



U UUU 



A .AAA 

 U UUU 



A .AAA 

 U UUU 



A .AAA 

 U UUU 



ft -nnn 

 u UUU 



ft 'ftftf\ 



U UUU 



A . AAA 

 U UUU 



10 



i A .AT 1 

 + U Ull 



i a . ni i 

 + U Ull 



+ "018 



+ *014 









OVJ 



i A .AT K 



+ U U10 



i A . Al O 



+ U Ulo 



+ - 022 



+ *015 











_i A - AO A 



+ U U.sU 



i A .AT a 



+ u uio 



i A . AO C 



+ U UZo 



i A .AT A 



+ u uiy 



i A • AAT 



+ U UU1 







minutes. 

















i 



1 



+ "027 



+ ' 022 



+ - 029 



+ * 024 



i A -AAT 

 T U UU1 



+ "001 



i A • AAA A 

 + U UUU4 



2 



+ '038 



+ "029 



+ "035 



+ "029 



j. ft -nn9 



+ '001 



+ '001 



q 



i A • A/I h 



+ U U4/ 



i a .no A 

 + U Uo4i 



+ '040 



+ 0*028 



i A -AAO 



T u UU.& 



+ *002 



i A .AAT 



+ U UU1 



A 



_i A • A/f K 

 + U U40 



i A .AOO 



+ U Uoo 



+ ' 043 



+ *028 



i A • AAO 



T U UUO 



+ * 003 



i A .AAT 

 + U UU1 



5 



i A • A/1 O 



+ U U4Z 



i A. AO A 



+ U Uoy 



i A .Aft A 



+ U UoU 



i A • A/I A 

 + U U4U 



j. ft -ftftA 



+ '004 



l A .AAT 

 + U UU1 



o 



+ 0'036 



+ "039 



+ *060 



+ "044 



i A .AA/f 



T U UU^fc 



+ *004 



+ 0*001 



i 



+ u uz/ 



+ 0*038 



+ -063 



+ * 049 



t A . AA/( 



+ U UU* 



+ ' 004 



+ *001 



o 

 o 



+ '025 



+ "040 



+ 0*064 



+ "054 



I A • AA/T 



+ U UU4< 



+ '004 



+ *002 



q 



+ "026 



+ "029 



+ *069 



+ '063 



i A .AA/T 



+ U UU4k 



+ '005 



+ '002 



in 



+ 0-023 



+ '030 



+ 0*072 



+ 0-060 



i A • AAK 



+ U UUO 



+ 0-005 



+ 0'002 





+ 0-020 



+ 0-033 



+ 0-087 



+ 0*081 



t U UUO 



+ -006 



+ *002 



10 



+ -020 



+ 0-039 



+ 0-107 



+ 0*083 



i A • AACC 



+ U UUO 



+ 0'008 



+ 0'003 



1/ 2 



+ 0-023 



+ -040 



+ 0-123 



+ "081 



■ A . AAQ 



+ U UUo 



+ 0-009 



+ 0*003 



9ft 



+ 0-025 



+ -040 



+ -104 



+ 0-083 



i_ A .AAQ 



+ u uuy 



+ 0-010 



+ 0*003 



ZiO 



+ 0-024 



+ 0-051 



+ 0-114 



+ 0-072 



+ U Ulo 



+ 0-011 



+ 0*004 



30 



+ 0:019 



+ 0-056 



+ 113 



+ 0-098 



+ 0-013 



+ 0-014 



+ *004 



35 



+ 0-015 



+ 0-055 



+ 0-094 



+ 0-072 



+ -014 



+ 0-019 



+ 0*004 



40 



+ 0-017 



+ 0-047 



+ 0-103 



+ 0-067 



+ -015 



-t- *022 



+ 0-004 



45 



+ 0-014 



+ 0-028 



+ 0-092 



+ 0-069 



-i- 0-017 



+ 0-015 



+ 0-004 



hours. 

















1 





+ 0-020 







+ "019 





+ -003 



U 











+ 0-014 







H 





+ 0-026 











+ 0-005 



2 















+ 007 



2| 





+ 0-022 











+ 0-009 



3 















+ 0-009 



3* 















+ 0-007 



4 





+ 0-054 













In the experiments with the steel bars in cupric acetate, Col. 15, Division II, magnetisation of 

 he bar A ceased at 45 minutes, the subsequent results being due to the residual magnetism. 



