76 THE HUMAN SIDE OF TREES 



petuate the species. The typical and most perfect 

 of the group stands a little apart from its fellows, 

 like an honour student in a college, as an example 

 to the others and also that it may have a chance to 

 develop to the fullest extent. Every specimen is 

 numbered, labelled, placed on the map of the 

 grounds and given space in the detailed records 

 quite as thoroughly as the students of a man- 

 college. 



With such careful training and with so many 

 tree histories to study, it is only natural that the 

 Arnold Arboretum should furnish much valuable 

 data and be a most worthy exponent of tree-educa- 

 tion in general. Each year registration in this 

 tree school shows a healthy increase and a more 

 varied list of localities from which the students 

 come. 



