IRON 



1005 



to group the producers together, leading the gas from all into one main flue, from which 

 the several furnaces draw their supplies. 



126o 



The puddling furnace, proper, is shown iufys. 1266, 1267, and 1268. 



1266 



Fig. 1266 is a front elevation of the furnace, showing the gas reversing valve and 

 flues in section. 



