Methods of Forest Organization. 71 



He divides the forest into proportional areas (which 

 were marked by stones in the woods), equalizing them 

 according to age, quality, increment, soil, exposure, 

 so as to secure equal annual budgets; the stands were 

 ranged into seven or eight unequal age classes and 

 each into as many annual felling areas as there are 

 years in the age class; if some of the age classes were 

 absent, he extended the time for cutting in the older 

 class until the younger had grown to the proper age 

 and by varying the cut from good to poor sites for 

 stands he tried to even out the budgets. The volume 

 budget he determined by average increment measure- 

 ments. This method was, however, much too far 

 advanced and required too much mathematics to 

 find imitators at that time. 



Another method which proved also too complex for 

 the foresters of the time was that of v. Wedell ; never- 

 theless, by 1790, he had by it put into working order 

 800,000 acres in Silesia. He divided this area into 

 districts, the districts into blocks or management 

 classes, and used an elaborated proportional area 

 division for determining the felling budget. He 

 distinguished quality of stand and quality of site, 

 and made four site classes. The volume of stock, he 

 found by means of sample areas, to which he added 

 the increment in order to find the total volume for 

 harvest, when it could be determined how long with 

 a given budget the stands would last, or what average 

 annual felling budget could be taken before the next 

 age-class would be mature. 



In the North German plain, with very uniform 

 conditions of soil and timber, the method of equal 



