: join them t Aether by a copper 

 lead ju .in^ the en the next couple 



thegalvanoi Bisters 70" g a 





Now take three oth< irmly, and connected together 



in casting, thus (Fig. 6), and at 375 R what is the n 



;o galvr. ? No, galvr. zero ! 



Take coupl ; again, with different temperatures, 



300* 1 1 shows 50 galvr.; but strange 



to sa> up to 400" R, in spite of Sir \V. Thomson, 



or the " Thomson effect " of the iron being in it> favour to 

 'I Iv, the galvanometer falls back to 

 44" on the >calc. 



Let ult it will gi\ firmly solder 



thr i; ; iiUi> tl iron coi:_ -range 



to say the gaKat nul t!n> tin, 



vr. Why IN tlii^ > What is the 

 it ? 



