7G College of Forestry 



number of the trees annually planted assuming an annual 

 planting of 1,000 trees, until the 10,000 inferior trees are 

 replaced, and the annual increase is only sufficient to equal 

 replacements. The number of new trees which shall be 

 planted is of course only limited by the funds available, and, 

 if a really progressive policy is to be adopted, should not be 

 less than 1.0(H) trees, or live miles of our proposed system, 

 until the 10,000 additional new trees are secured. 



Based on these figures, a tree planting program for a five- 

 year period from date would give an annual maintenance 

 and planting problem somewhat as follows: 



First year: Maintenance of 15,000 trees. New planting 

 of 1,000 trees. 



Second year: Maintenance of 15,500 trees. New plant- 

 ing of 1,000 trees. 



Third year: Maintenance of 10,000 trees. New planting 

 of 1,000 trees. 



Fourth year: Maintenance of 16,500 trees. New plant- 

 ing of 1,000 trees. 



Fifth year: Maintenance of 17,000 trees. New planting 

 of 1,000 trees. 



It is evident then that if we can learn the average ex- 

 pense per tree for annual maintenance, and also the cost of 

 our new planting, we can establish very accurately the an- 

 nual budget which will be necessary for our proposed Bureau 

 of City Forestry, and hence the size and scope of the re- 

 quired organization. 



Maintenance: 



As has been said above, it is very difficult to standardize 

 the cost of street tree maintenance. The city of Paris, 

 world-famous for the beauty of its street trees, finds it neces- 

 sary to spend $1.25 per tree for annual maintenance. We 

 have no American city with similar conditions maintaining 

 its trees at the same degree of excellence, and, in those Amer- 

 ican cities where first-class street tree maintenance is secured. 



