30 
BULLETIN 1151, IT. S. DEPARTMENT OE AGRICULTURE. 
The extra floor space may also be used when skinning the foxes 
and curing the pelts. 
GUARD FENCE. 
The guard fence serves to keep dogs and other intruders away 
from the breeding pens and in addition provides greater security, 
for in case a fox escapes from a pen it may be captured within the 
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Fig. 36. — Plan of watch tower commonly used in circular ranches. 
outer fence. It may be of wire (Fig. 11) or wood (Fig. 37), or a 
combination of the two, and ma} 7 be constructed like the pen wall 
already described. Boards for the first 6 feet, with the addition of 
an upper 4 feet of wire netting, are frequently used; on the ground, 
inside, carpet wire 2 feet wide is nailed to the boards. The type of 
guard fence to be built depends upon the location of the ranch. If 
it is in a secluded spot, away from general annoyances, it is well to 
make it entirely of wire. In other cases it should be built partly 
or all of wood. 
