EXPERIMENTS IN THINNINGS. 495 



Experiment IV. 



Made on direct sowings of spruce effected in furrows 85 centi- 

 metres broad and 1 metre- 70 centimetres apart ; leaf-canopy com- 

 plete, if we except three spots in area A where snawbreaks resulted 

 in small interruptions. First thinning made at the age of 40 years, 

 four subsec[uent thinnings at intervals of 5 years. 



A- Heavily thinned area. 



Standing stock at 40 years ... 212-7& 139-49 352-25 



B. Moderately thinned area. 

 Standing stock at 40 years ...209-43 135-59 345-02 



