1889.] Electro-chemical Effects on Magnetising Iron. 189 



Table T — continued. 





Electro-chemical effect between north and south polar terminals 





of magnetised steel bars. E.M.F. in volt. 



The electro- 





chemical position of the north polar terminal 



was positive, 





PTppnf, wIipvp 



otherwise indicated. 



Time 











from 





Cupric sulphate solution. 





commence- 











ment of 











experiment. 



Experiment 



1 'J A 1 1 1 1 Kj ill/ 



Hi A. IJC/1 111LC1LU 



Experiment 



No. 87. 



No. 88. 



No. 90. 



No. 91. 









Electrolyte 



— 



TTjIppf vol vfp 







TT!1 ppf tti1 17+ p 



Electrolyte 





below. 



UC1U w . 



below. 



below. 



seconds. 



















-0-018 



-o-oii 



-0-014 



0-018 



30 



-O'Oll 



-0-004 



-o-oio 



o -on 



minutes. 











1 



o-ooi 



001 



0-002 



o-oio 



2 



0-003 



0-002 



0-003 



o-oii 



3 



0-003 



0-005 



0-004 



o-oii 



4 



0-006 



0-007 



0-006 



011 



5 



0-006 



0-006 



0-007 



o-oii 



6 



0-007 



0-007 



0-009 



-012 . 



7 



0-009 



0-007 



0-009 



0-011 



8 



0-009 



0-007 



o-oio 



0-011 



9 



o-oio 



0-006 



o-oio 



0-012 



10 



011 



-006 



o-oii 



0-013 



11 



o-oii 



0-007 



o-oii 



-013 



12 



0-013 



0-009 



0-012 



0-014 



13 



0-014 



0-009 



0-013 



0-014 



14 



0-016 



'009 



'014 



0-015 



15 



0-018 



0-0] 



0-015 



0-017 



16 



0-019 



o-oii 



0-017 



'017 



17 



0-020 



0-011 



0-017 



0-020 



18 



n '09^ 



U \J^O 



o-oii 



0-017 



'025 



19 



0-025 



0-011 



0-016 



0-027 



20 



0-027 



o-oii 



0-018 



'030 



21 



0-027 



o-oii 



0-019 



033 



99 



0-027 



o-oii 



0-022 



0-034 



23 



028 



0-012 



0-019 



0-036 



24 



0-030 



0-012 



0-019 



0-038 



25 



0-031 



0-011 



0-019 



0-040 



26 



0-031 



011 



0-020 



0-041 



27 



0-034 



0-011 



0-020 



0-042 



28 



0-035 



o-oio 



0-020 



0-044 



29 



0-036 



0-011 



0-019 



0-044 



30 



037 



o-oio 



0-018 



0'044 



The magnets for the experiments in the above Table I were in some experiments 

 8^, and in others 4£ inches long. 



