h these exp fore making new couple*, we 



will l<ok int<> the reason of some of the results in.: 

 some of t :ts i hat have been described 



i 4 and 5 the /A cogs in...c MXHICT, and ha 



than the Iron tgs ; they take 



up the heat and lose it more quickly than the Iron, 

 ami tin- jHitmti.il stress, Of 1'. M I having bc 

 ratctl, it is ! .1 touching i the 



1 in the ual\aiiiiin ' ' Now what 



takes t into trial. ) the 



\ aiul ; .in- 1 so as to ma linu- 



l>ly this: t! r copper lead be- 



id although there 



arc cog \\ ' i) in the couple, the Iron cog 



:, being at th :nj>erature as the /A. 



k, aiul no E. M. R is iiuli- \\'e will show 



this, hut without i 4. "tl instead of 



a thin CM, iron lead, let a fine strij> or bar of 



copper, and let the end of this touch the couple (sc< 

 2O) ; \vl 40 galv: 



^ 



