PREFACE. 5 



simple, non-technical language, the character of 

 the effects, both on the general climate of a coun- 

 try and on the distribution of its rainfall, which 

 inexorably follow the unsystematic removal of its 

 forests. 



It is only necessary to give the public some little 

 insight into the effects produced by the destruction 

 of the forest to arouse it to a conviction of the 

 necessity for the existence of "Forestry Associa- 

 tions," for the enactment of laws regulating the 

 manner in which the forests shall be removed, 

 and for the setting aside of certain districts on 

 which forests shall be perpetually maintained. 



In order to enable the readers of this little book 

 to carry their reading beyond the elementary prin- 

 ciples which it discloses, appropriate extracts, taken 

 from standard authors, and published by permis- 

 sion of the authors or publishers, have been added 

 at the end of each primer. In all cases the exact 

 title of the book has been given, as well as the 

 names of its publishers. 



For general aid in remembering the princi- 

 ples discussed in each primer, a concise review 

 has been given at the close of the book in the 

 form of a primer of primers. 



The author has not hesitated to consult freely 

 1* 



