Changes of Property of Amalgams by Repeated Fusion. 229 

 The annexed diagram shows the curve of the change. 

 Curve showing Effect of repeated Fusions on Cd Amalgam. 



2 3 4 5 6 7 

 No. of Fusions. 



In order to ascertain whether the alloy changed in property 

 spontaneously, a third freshly prepared bar was kept in a hori- 

 zontal position and examined daily with the help of the same 

 electrolyte and galvanometer. The following permanent 

 deflexions were obtained : — 



Number of 

 Days. 



Deflexions. 



o 



Number of 

 Days. 



Deflexions. 



o 



1 . . 



. 18 



6 . 



. . 7-5 



2 . . 



. 10 



7 . 



. . 6-5 



3 . . 



. 10 



8 . 



. 7-5 



4 . . 



. 7-25 



9 . 



. . 7-0 



5 . . 



. 8-0 



10 . 



. . 6-0 



At the first moment of immersion of the couple each day 

 the amount of temporary deflexion was about 30 degrees, and 



