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TREE SURGERY, SPRA 
A beautiful tree is the work of many years—a thing 
which cannot be replaced without long waiting, great 
expense, or both. Trees are living things and like every- 
thing else that has life, must have food and water. 
Trees in their natural habitat are able to obtain water, 
and food is supplied by the annual fall of leaves which 
gradually decay and return back into the soil for the 
tree’s consumption. However, in the artificial surround- | 
ings that most trees have to combat, where all leaves 
are raked away, robbing the trees of their natural source 
of food, trees often starve to death. Trees under this 
condition should be fed with specially prepared tree 
food at regular intervals. Also, trees should be sprayed 
to combat the many insects and diseases which prey 
upon them. Pruning and thinning out of crossing or 


1. Removing decayed wood. Care must be 
exercised to see that all rotten wood is 
removed. Cavity is then specially treated 
with wood preservatives before filling. 
2. Decayed spots can occur high up in your 
trees. Careful checking from time to time 
by our experts may add many years to the 
life of your trees. 
3. Sectional filling of large base cavity. Wood 
preservative may be seen in upper part of 
cavity. In our experience cement has 
proved the most practical material for 
fillings. 
4. Tree sanitation—the trimming of all dead 
and decayed wood from all parts of the 
tree. This has proved the most satisfactory 
method of combatting the Dutch Elm dis- | 
ease. This view shows modern methods of 
performing this work. 
