MASSACHUSETTS AGRICULTURAL 

 EXPERIMENT STATION. 



AMHERST, MASS. 



COMMITTEE ON EXPERIMENT STATION: 



Charles H. Preston, Chairman, 



J. Lewis Ellsworth, 



William H. Bowker, Samuel C. Damon, 



The President of the College, ex officio, 

 The Director of the Station, ex-officio. 

 William P. Brooks, Ph. D., Director. 



Annual reports and bulletins on a variety of subjects are published. 

 These are sent free on request to all interested in agriculture. Part- 

 ies likely to find publications on special subjects only of interest will 

 please indicate these subjects. Correspondence or consultation on 

 all matters affecting any branch of our agriculture is welcomed. 

 Communications should be addressed to the 



Agricultural Experiment Station, 



Amherst, Mass. 



CONTENTS. 



Page. 



Shade Trees 03 



The Law of Shade Trees 05 



The Office of Tree Warden 05 



Shade Trees and their Protection 06 



Woodlots and Highway Trees 09 



Sliade Trees on State Highways 09 



Shade Trees in Cities 09 



Trees on Private Property 10 



Selection, Planting and Care 11 



Suitable Trees for Streets and Roadsides 11 



Rapidity of Growth 18 



Transplanting 18 



Pruning 21 



Tree Warden's Outfit 25 



Tree Guards 26 



Tree Surgery 28 



Healing of Wounds 28 



Chaining and Bolting 30 



Treating Decayed Cavities, Fillings, etc 31 



The Effects of Gas, Electricity, etc. on Trees 37 



Influence of Illuminating Gas 37 



Effects of Wires on Trees 44 



Electrical Injuries 46 



Lightning 48 



Insect Enemies 49 



