FM. Mag. S. 5. Vol.15. PL IX. 



Winding Electromagnets. 



LINES .OF FORCE AS SHOWN BY IRON FILINGS. 



N? 6. 

 WOUND REGULARLY OVER WHOLE LENGTH. 



ipil- 





;^ 



— ZUSZ 



N? 7. 

 WOUND CONED TOWARDS EACH END. 



N° 8. 

 WOUND REGULARLY OVER HALF LENGTH. 



i^^^VA'K ',YA \\ li i nihil I U//// 





"■ " 



:• 



N? 9, 

 WOUND CONED OVER HALF LENGTH. 



Miniern. Bros.lith. 



