Interature on Forest Policy. 133 
whose volume on Bodenkunde (1893) may be consid- 
ered the standard of the present day. 
The question of the climatic significance of forests is 
one which first became recognized as capable of solution 
by scientific means when the movement for forest ex- 
periment stations began to take shape and the systematic 
collecting of observed data was attempted. Most of the 
problems are still unsolved. 
With the aspects of political economy in reference to 
forest policy the foresters had occupied themselves but 
little, leaving the shaping of public opinion to the Cam- 
eralists, whose influence lasted long into the century. 
These produced a good deal of literature in the early 
years of the century when the question of retaining 
or selling state forests was under discussion, and, under 
the influence of the teachings of Adam Smith, their 
opinion was mostly favorable to sale. Only gradually 
was the propriety of state forests recognized by them, 
till finally the leading economists, Rau, Roscher and 
Wagner, took a decided stand in favor of this view. 
The foresters naturally were for retention of the ex- 
isting State properties, but one-sided mercantilistic 
views regarding their administration persisted with them 
till modern times. 
Wedekind as early as 1821 advocated the theory 
which is now becoming a practice, that the state should 
not only retain, but increase its present forest property 
by purchase of all absolute forest soil for the purpose of 
reforestation. The erratic and radical Pfeil alone was 
found with the Cameralists on the opposite side in 1816, 
but by 1834 he had entirely gone over to the side of the 
