156 



Mr. T. Andrews. 



[May 3, 



Table C. 



(An explanation of the details of this table will be found at the end.) 



Time from 

 commencement 

 of 



magnetisation. 



seconds. 

 ' 

 15 

 30 

 45 

 minutes. 



1 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 ]8 

 19 

 20 

 25 

 30 



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 1. 



Hydrochloric 

 acid, cone. 



Iron bars. 



o-ooo 



o 



Column 2. 



Bromine in potassium bromide. 



Iron bars. 



0-000 

 + 0-011 

 + -019 

 + -026 



+ '020 

 + 0-024 

 + 0-028 

 + '025 

 + -016 

 -f -022 

 + -022 

 + 0-023 

 + 0-025 

 + -026 

 + 0-023 

 + 0-028 

 + 0*030 

 + 0-022 

 + '013 

 + -004 

 + '006 

 + '009 

 + -006 

 + 0-006 

 + 0-005 

 + 0-002 



II. 



o-ooo 



+ -014 

 + 0-019 

 + 0-025 



+ -024 

 + -031 

 + -045 

 + 0-058 

 + 0-060 

 + -046 

 + 0*010 

 + -009 

 + 0-007 

 + 0-011 

 + -012 

 + 0-012 

 + 0-011 

 + -012 

 + 0-013 

 + 0-013 

 + 0-013 

 + 0-009 

 + 0-010 

 + -008 

 + -001 

 + 0-002 



Steel bars. 



III. 



o-ooo 



+ 0-016 

 + 0-025 

 + -029 



+ 0-032 

 + -033 

 + 0-028 

 + 0-025 

 + 0-016 

 + 0-012 



+ -on 



+ 0-011 

 + 0014 



+ 0-011 

 + -009 

 + 0-011 

 + 0-006 

 + 0-004 

 + 0-011 

 + 0-011 

 + 0-011 

 + -014 

 + 0-010 

 + 0-009 



Column 3. 



Bromine in potassium 

 bromide (weak 

 solution) . 



Iron bars. 



o-ooo 



+ 0-007 

 + -007 

 + '007 



+ 0-007 

 + 0-008 

 + 0-006 

 + 0-009 

 + 0-007 

 + 0-006 

 + 0-004 

 + -004 

 + -004 

 + 0-003 

 + 0-004 

 + 0-004 

 + 0-004 

 + 0-009 

 + 0-009 

 + 0-010 

 + 0-009 

 + 0-011 

 + -009 

 + -010 

 + 0-009 

 + 0-004 



