572 JOURNAL OF FORi;STRY 



I. No simple, rapid method of determination of site by actual measure- 

 ments or as based on collected data seemed feasible of operation. 2. 

 The results obtained by a good man are sufficiently accurate for the 

 uses to which they are to be put. 3. The determination of the quality 

 of the site is made only after being referenced immediately and directly 

 through the judgment of the compassman to the principal use to which 

 the result is to be placed — that is, in the choice of species recommended 

 for planting on the area. The compassman in determining the site 

 asks: "Is this area best suited to white pine, to Norway, or to jack 

 pine?" and for his answer he looks to the evidence about him. 



The chief disadvantages of the method, it is believed, lie in the fol- 

 lowing facts: I. The determinations are based upon nothing absolutely 

 tangible or certain ; the bases for the determination are not recorded. 

 Seldom will two men draw the boundaries of the sites in the same 

 place (except where the line of demarcation between the sites is sharp 

 and very apparent, as on the edge of a swamp). There is no way to 

 check the accuracy of the determinations except by a trip over the 

 ground. 2. The accuracy and the value of the determinations vary 

 with the ability and integrity of the mapper. It is not a method by 

 which an inexperienced man can make nearly as good determinations 

 as an experienced man. 



It has been found that the one prime factor in good determinations 

 lies in the fidelity with which the individual applies himself to the work. 

 Thorough instruction and trials are necessary prerequisites to success- 

 ful work. 



TYPE MAP 



Type designations and their boundaries are based entirely upon the 

 present composition of the stand. No thought is given to any possible 

 future forest conditions which may appear upon the areas. The type 

 is based chiefly upon the number of trees one inch d. b. h. and over 

 recorded by the estimator. 



The type is named after that species which clearly predominates in 

 the stand. When no one species predominates, the type is called by 

 some general descriptive name, as mixed hardwoods, and the species 

 represented are written on the type sheet within the type boundaries 

 in the order of their abundance. The use of key trees, as is done by 

 the Forest Service in some regions to indicate the type, although the 

 trees thus used may represent but a small portion of the total trees on 

 the type area, is not used here. No hard and fast proportoins of species 



