18 A MANUAL OF FORESTRY. 



Wire, imperial standard wire gauge, No. 8, about one 

 shilling per 100 feet; galvanized, J more. Straining 

 bolts, 12 inches long, -| inch diameter, with nut and 

 washer, tenpence each. Straining brackets (Fig. 9), 

 tenpence each. Steel staples, per 1000, = 9s. ; gal- 

 vanized, ^ more. Thus the iron materials come to about 

 3e?. a yard, or 4t/. if galvanized wire and staples are used. 

 The cost of the posts and of labour depends on local 

 circumstances. 



Fig. 10. 



For nurseries iron fences may be used, to which wire 

 netting may be added if necessary. Fig. 10 represents 

 such a fence. It is 4 feet high, 2J feet in the 

 ground, and strong enough to keep out horned 

 cattle, sheep, goats, hares and rabbits. The strain- 

 ing pillars, #, are so arranged as to strain the wires 

 on both sides; they are usually, in this fence, 

 placed 220 yards apart. The standards, , are tee 

 irons, 1" x 1J" x T V placed 12 feet apart. The 

 top wire is galvanized barb No. 4, the three lower 

 wires No. 6 galvanized strand. The netting is 1J 

 inches mesh, medium quality ; it reaches 3 J feet above 



