338 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE IV 



Fig. 1. — A hardware cloth tree protector expanded to accommodate the 

 growing trunk of the tree and secured by two short lengths of copper wire. 

 Note the unprotected part of the trunk is toward the sidewalk and not toward 

 the street. An area should be left unpaved about the base of the tree, in order 

 to afford it an opportunity for development and at the same time to prevent 

 injury to the walk by the roots heaving it up. 



Fig. 2. — The danger of injury to tree trunks is considerable in the imme- 

 diate vicinity of building operations. These large trees are in front of property 

 upon which there was being erected a large school building. P'or protecting 

 large trees under such conditions, the hardware cloth guards are not adequate 

 but a more sturdy type should be used. 



