86 College of Forestry 



individual tree in any section of the city, and to learn the 

 kind, size and condition of the tree or trees in question. 

 The saving in time in investigating complaints regarding 

 trees already several times investigated will alone be worth 

 the cost of the census. In addition to the information 

 regarding existing trees on any street the cards will also 

 carry the information regarding each block in the city as to 

 the desirability of planting and the variety of tree and the 

 type of planting specification recommended. This informa- 

 tion is to be derived from the results of the investigation of 

 this report or from additional study of the problem made by 

 the future forestry bureau. It is needless to point out the 

 value of such information thus readily accessible not only to 

 the officers in the park department but to those of other 

 city departments which have to do with the control and con- 

 struction of streets. 



With the establishment of a forestry bureau, maps should 

 be prepared upon the basis of the card census indicating by 

 color the location of the various kinds of trees. Such maps 

 would be invaluable in handling the spraying work of the 

 department. Certain varieties of trees require spraying at 

 one time of the year and others at another, and no man can 

 carry in his memory the exact location of all the trees in 

 a district so large as Manhattan. Without such maps there 

 will always be a considerable variation in the efficiency of 

 the spraying campaign from year to year. 



The information of this census should be further comple- 

 mented by a map showing the location of all past and future 

 planting, and thus serve as a record of progress when used in 

 connection with the maps of the proposed street tree system 

 which accompanies this report. 



