116 Forest Club Annual 



if possible, what per cent of the species in mixture will determine 

 a certain type. This is a difficult task and especially so to a new 

 field man who may be assigned the typing. It requires a thorough 

 knowledge of the general conditions in order to know before- 

 hand what types are wanted, and also considerable knowledge of 

 the relative amounts of the various species in mixture. What is 

 needed is a more systematic guide for the man in the field, who 

 often bases his judgement of the type he is in on both the cover 

 and the physical features and makes a poor combination of the 

 two methods. 



The management type as established by the physical features 

 of the country can be determined in a definite and systematic 

 manner and the resultant data accurately mapped. This is not 

 true however for some regions where physical features are not 

 so marked. Variations in composition on a given area are often 

 largely determined by the law of chance, but the physical factors 

 are permanent. Such a basis for forest types is, I believe, the only 

 solution for accurate work where the forest is a very composite 

 one. Value of the so-called cover type, however, should not be 

 underestimated. The cover or stand map is made to show the 

 location and amount of the principal timber species on the 

 forest and is invaluable in any sale of timber. For the present 

 at least while the disposition of timber is of greater importance 

 than its acquisition, the cover type will doubtless be of chief 

 importance to the forester. 



