THE REFLECTING GALVANOMETER. 



163 



glass. The electric ciirrent can be transmitted through 

 the coils B' B, which move on slides, in order that by 

 their greater or lesser distance from the magnet, the 



sensitiveness of the iristrtimeiit may be graduated at 

 will. In order to measure the deflections, a graduated 

 scale is placed parallel to the mirror when in its qui- 



