8 



If an iron strip, thin pointed, can be cast into tin /inc 

 antimony si.i< ,n i i.v, ><> that it balances itself, it makes tin- 

 experiment easier. Connect the two ends up, raise the 

 heating surface to about 375 F., and the galvanometer will 

 say 50 galvr. (Fig. 4). Have a pot of melted wax 

 at the same temperatures ready at hand, and plunge the 

 Thermo-couple into it No E.M.F. is indicated, and at 

 once the galvanometer falls to zero. 



