DEPARTMENT OF MUNICIPAL ARBORICULTURE 247 



date are noted. The columns are headed as "Tree Number, " 

 ' ' Species, " " Diameter, " " Condition, " and " Remarks. ' ' Be- 

 ginning at one end of the street, corner of Beech Street, the 

 first tree is numbered as one. Its distance from the corner 

 is found to be fourteen feet. The tree is shown by a small 

 black circle on the right hand page. The small "c" after 

 ' '14'" indicates that the distance is from the corner. The 

 tree is then described on the left hand page. It is a Norway 

 maple, five inches in diameter, measured breast high, and 

 in good condition. In the column under "Remarks" is 

 entered anything about the condition of the trees that is 

 abnormal or unusual. 



The distance between the first and second trees is then 

 measured, noted on the right hand page and the entry of the 

 tree made on the left hand page. And so on the enumera- 

 tion continues, first on one side of the street and then on the 

 other. To do this work effectively and rapidly, three men 

 are required in the gang : a rear chainman, a head chainman, 

 and a man who makes the entry of the trees. Distances 

 are measured from the centre of one tree to the centre of 

 another. The head chainman calls off the distances and the 

 enumerator notes all of the other data which are entered on 

 the left hand page. 



The method of rating trees with respect to their condition 

 depends upon the object sought in enumerating them. So 

 many factors are to be considered in the judgment of the 

 condition of a tree that it would be impossible in taking a 

 general census to enter a detailed description of each tree. 

 A general method of classification therefore has to be 

 adopted that will enable the tree warden, from a study of the 

 records, to form a good idea of the general condition of the 

 trees on a street. 



