33 JOURNAL OF FORESTRY 



late silvicultiiral plans with any promise of permanency. Some of 

 rhese problems resulting from past treatment of the Adirondack forest 

 which should he considered in working out a constructive silvicultural 

 policy are : 



1 — Relative rate of growth of different hardwoods. 



2 — Determination of extent of mortality of various species following different 

 degrees of removal of hardwoods. 



3 — Age or size at which spruce will make the quickest and most effective re- 

 covery when released from competition with hardwoods. 



4 — Results obtainable by under-planting. 



5 — Development of such a market for hardwoods as to justify their removal. 



6— Brush disposal. 



7 — Soil factors in relation to seed germination. 



