■CXX)000' 



coxooa 

 C 



Plate VIII. — Section of cheese-curing room and liorizontal multiple sub-oarth duct. 

 A, inlet to curing room; B, end of sub-earth duct in briclsed enti-ance to factory; 

 C, cross-section of the multiple ducts; D, E, bricked entrance under funnel at 

 outer end of sub-earth duct; F, funnel with mouth 36 inches across; G, vane to 

 hold funnel to the wind; H, ventilating flue with damper. (Prom Wis. Agr. 

 Exp. Sta. Bui. 70.) 



