PRIMER OF PRIMERS. 177 



XVIII. PRIMER OF PRIMERS. 



FORESTRY treats of the care and preservation of 

 parts of the earth covered by trees, together with 

 the best means of replanting such areas when 

 deprived of their trees. 



When the germs are present, trees will grow 

 naturally wherever suitable conditions of soil, heat, 

 and moisture exist. 



The climatic conditions best suited for the 

 growth of trees are also best suited for the growth 

 of men. As density of population increases, the 

 trees must be removed from large areas : 



1. For agricultural purposes. 



2. For the location of roads. 



3. For the wood or other products. 



The principal product of the forest is wood, 

 which is required for fuel or charcoal, for building 

 purposes generally, for fences, for telegraph-poles, 

 for mining purposes, for railroad ties, or for bark 

 for tanning. 



The object of forestry is to regulate the removal 

 of the forest where necessary, and to point out the 



