ARBORICULTURE 



A MONTHLY MAGAZINE. 



Published in the Intekest of the 

 International Society of Arboriculture. 



\'()liime I. 



CHIL'ACO, SEPTEMB1':R, imri. 



Number i. 



Co|iyriglit by tlie International Society of Arboriculture, 1902. 



Arboriculture 



ARBORICULTURE is a science that 

 teaches how great are the influences 

 which forests or trees exert upon 

 a community; not only from the economic 

 uses for which wood is adapted for man's 

 benefit, but in their far-reaching effect 

 upon climate and thus on the welfare and 

 permanence of nations and peoples. Arbor- 

 iculture is full of interest and is of vast 

 importance to mankind. Forestry, as usu- 

 ally understood, pertains to the manage- 

 ment of forests. Arboriculture comprises 

 forestry and also includes every subject re- 

 lating to the growth of trees and their in- 

 fluences. 



ECONOMICALLY 



it considers the requirements of agricul- 

 ture, manufacture, commerce and mining, 

 and teaches the best means for supplying 

 the needs of various pursuits. At what age 

 or size timber should be cut and what should 

 be cut as well as what should be preserved, 

 so as not to destroy the forest, but perpet- 

 uate it; the preservation of an ample num- 

 ber of trees for seed bearing in order that 

 nature may reproduce the forest after the 

 demands of commerce and manufacture 

 have caused the removal of marketable trees, 

 are subjects for investigation. 



ENTOMOLOGY 



so far as it pertains to destructive insects 

 which feed upon forest and shade trees, and 

 practical methods for combating them, as 

 well as 



ORNITHOLOGY, 



since birds are protectors of the forests. 

 Both these are included in arboriculture, 

 which also comprises the study of those 

 fungus and other diseases common to many 

 forest and cultivated trees. 



PROTECTION OP FORESTS FROM FIRES, 



how to prevent and how to extinguish them 

 before too great an area shall have been 

 destroyed, construction and maintenance of 

 fire guards along natural base lines care- 

 fully prepared and managed so as to pre- 

 vent the spread of fires which may have 

 been started from any cause, are important 

 subjects included in arboriculture. 



IRRIGATION, 



which is receiving increased attention as it 

 deserves, is subordinate to arboriculture, 

 for without forests to protect the snowfall, 

 preventing its too rapid melting, as well as 

 to regulate the electric currents which 

 largely govern the movement of clouds and 

 precipitation of moisture, there will be no 

 necessity for irrigation works, since there 

 will be little water requiring reservoirs or 

 ditches. 



HISTORY IS REPLETE WITH ILLUSTRATIONS 



oft repeated in which nations have been 

 destroyed and the people dispersed, or 

 greatly reduced in numbers, where after the 

 destruction of the forests such country be- 

 came so arid and barren as to refuse sup- 



