TREE GUARDS 103 



particular type of nozzle which he sells with his 

 machinery. 



PROTECTING PLANTS FROM ANIMALS 



Along roadsides and other exposed places it is 

 'often necessary to protect newly set trees from 

 horses and the encroachment of vehicles. There 

 are various kinds of tree guards. The best types 

 are those which are more or less open, so as to 

 allow the free passage of air, and which are far 

 enough removed from the body of the tree that 

 the trunk may expand without difficulty. If the 

 tree guards are very tight they may shade the 

 trunk so much that the tree may suffer when the 

 guard is removed. It 

 is important that the 

 guard does not fill with 

 litter in which insects 

 may harbor. As soon 

 as the tree is old enough 

 to escape injury, the 

 guards should be re- 

 moved. A very good 

 guard, made of laths 

 held together with three 

 strips of band-iron, and 101 - Portable barrel outfit " 

 secured to iron posts, is shown in Fig. 106. Fig. 

 107 shows a guard made by winding fencing 

 wire upon three posts or stakes. When there is 

 likely to be danger from too great shading of 



