CONTENTS. 



Introduction, .... 



Requirements of shade trees, . 



Adaptability to climatic conditions, 



Hardiness and resistance. 



Configuration and conformity. 



Longevity, . . . . 



Rapidity of growth, 



Shade production, 



Root peculiarities or habits. 



Neatness, ..... 



.(Esthetic value, .... 



Susceptibility to insect pests and diseases. 



Commercial importance, 

 Street and roadside trees, 

 What shall we plant? 

 Rapidity of growth of trees. 

 Streets and avenues, 

 Distance to plant, . 

 Country roadsides. 

 Root characteristics. 



Depth of roots, . 



Obstruction of sewer tile, etc., by roots of trees, 

 Branching characteristics. 

 Soil conditions, texture, etc., . 

 Soil covers, lawns, macadam, etc., 

 Excavations, curbings and sidewalks. 

 Effects of light and shade. 

 Transplanting, .... 

 Tree surgery, .... 



Pruning, ..... 



Healing of wounds. 



Disinfectants for wounds and cavities. 



Chaining and bolting trees, . 



Treating decayed cavities, filling, etc., 

 Methods of treating cavities. 

 Shaping the cavity, . 

 Concrete fillings. 

 Sectional concrete fillings. 

 Concrete coverings for the cavity opening, 

 Metal coverings. 

 Elastic cement. 

 Asphalt fillings. 

 Wooden block method, 

 Tree guards, . 

 Fertilizing trees, 



