138 



FOREST Ri=:cui.A'riox 



Fig. 8 illustrates the Regularity of Age Classes on ^^'orki^g 

 Section Xo. 11 of the Sihlwald of the Cit\' of Zurich, a 780-acre tract 

 of forest on rather steep mountain slopes and frequently injured by 

 heavy sno\\s, and therefore difficult to keep in well regulated 

 condition. 



CiA/C ; Soutlx , orUipVctUevv 



FiGUKE 8. Diagram of Age Class Conditions on Working Section No. II 

 of the Sihlwald, near Zurich, Switzerland. This Working Section of about 

 780 acres, contains lots No. 9-16 and is ramarkably regular in its age classes 

 in spite of much trouble from snow. Some lots contain timber of more than 

 one 20-year age class; see lot 11 with timber in Age Class I and II. After 

 Meister. 



The forest occupies one side of a vallex- running North and 

 South, cut is from Xorth to South, division into eight lots, the 

 method she!ter\\ ood. It will be noted that the age of timber on the 

 same lot may or may not be uniform. Regulation by .Austrian^ 

 Meyer Method is j^rescribed officially. 



