Methods of Forest Organization. 67 
1740, fixing upon different numbers of felling areas, but 
finally, in 1770, deciding on a rotation of seventy years. 
Lack of personnel prevented much progress of this 
regulation until in 1778 v. Kropf undertook the direc- 
tion of the forest survey and regulation, when a more 
regular progress may be noted. Not agreeing with his 
master regarding the short rotation of seventy years, he 
arranged to have each district divided into two working 
blocks, and by cutting alternately in these, managed to 
double that rotation. His successor, Hennert, in 1788 
devised a new method by introducing allotment of a 
number of annual felling areas to a period of the rota- 
tion when at least the periodic budget could be equalized. 
A value or money yield equalization of the felling 
budgets was also attempted. 
For easier handling the forest was divided into small 
compartments or Jagen and a classification of four, still 
uneven, periodic age classes (of different length for 
conifers and broadleaved forest), and three site qualities 
were employed. The merchantable stock was ascertained 
by a sample area method and the felling budget by divid- 
ing the oldest age class by the number of years it must 
last until the next was ready. Since no attempt was 
made to secure a proper age class gradation, the method 
failed to improve conditions for the next rotation. 
Some 500,000 acres were regulated according to this 
plan, probably very superficially. 
In 1789 Bavaria also ordered a division into annual 
felling areas. 
In all these methods of regulating the yield or budget 
the area played the main role, the volume being only a 
secondary consideration. 
