192 TOBACCO LEAF. 



space between the logs, will raise the barn a foot in 

 hight. A barn with four firing tiers will therefore be 

 17 feet high. When the barn is five firing tiers high it 

 requires 80 logs for its construction. 



The first firing tiers are usually put nine feet from 

 the ground, and the remaining tiers about two feet and 

 nine inches apart vertically. Ground tiers are some- 

 times put below the first firing tiers, for convenience in 



FIG. 47. AN ELABORATE PENNSYLVANIA BA11N. 



elevating and taking down the tobacco. Usually, there 

 are one or two tiers in the roof. When there are four 

 rooms, or four vertical spaces, between the tier poles, 

 the logs are cut about 17 feet long. When there are 

 five rooms, the length of the logs is 21 feet, and for six 

 rooms 25 feet long. Fig. 3(5 is a barn with four rooms 

 four tiers high, with ground tiers. Fig. 37 represents 



