Plate VII. — Showing the construction of wood curing-room: 1, 1, 1, sill; 2, '^, 'J., a 

 two-by-ten spilled to ends of joist; 3, .3, 3, a two-by-four spilied down, after 

 first layer of floor is laid, to toe-nail studs to; 4, 4, 4, a two-by-four spiked to 

 upper ends of studding of first story. A, A, A, A, three-ply acid and water- 

 proof paper. The drawing in the center shows space between studding filled 

 with sawdust and another dead-air space to be used when the best ducts 

 cannot be provided. (From Wis. Agr. Exp. Sta. Bui. 70.) 



