Sweden 



371 



i -9 mm. gauge ; but this has lately given way generally to high-con- 

 ductivity bronze, although the Copenhagen trunk has been run in 



FIG. 



Sweden with 3 mm. hard copper. The shorter trunks are crossed 

 and the longer revolved or twisted on the Moseley-Bottomley plan. 

 Special fixtures are used to facilitate the twisting. They consist 



B B 2 



