HALL. — THERMO-ELECTRIC HETEROGENEITY IN ALLOYS. 561 



After the data for curve C : had been obtained the wire was annealed 

 in the usual way, without being released from the screws S and S, 

 Figure 5, which held it upon the experimental rack. As the annealing 



10 



20 



30 



40 



60 



Figure 7. 



appeared to leave the wire a little slack after cooling, the left-hand S 

 was loosened and the wire was drawn a trifle till it became moderately 

 taut once more ; but later, and before any more observations were made 

 on it, the left-hand S being loosened again, the wire was slackened to 



VOL. XLI. — 36 



