A J\I E R I C A N SYLVICULTURE 



Sensitive against frost and drought; requires sliade; does best 

 when used for underplanting. 



Use transplanted small saplings. 



Avoid planting on open ground. 



Mayr recommends it for sugar orchards, not for timber 

 production. 



H. Betula lenta: Avoids wet frost dells and poor dry soil; 

 forms tap-root on sand and flat-root on clay. 



Height in five years five feet; in tAvent}^ years thirty-six feet. 



Growth bushy to start with, but soon straight, erect and free 

 from branches. 



Decidedly light demanding, but fond of side shade. 



No more frost-proof than Beech. Late and early frost damages 

 it, especially on wet clay. 



Game, rabbits and mice are very dangerous. 



Seed-bed should not be dug over. — Peel-off the top cover of grass 

 and weeds on humose sand, hoe the soil and then use roller. Plant 

 broadcast, one pound for two square poles; cover by sifting one- 

 twenty-fifth inch of sand on the seeds and roll again with roller; 

 keep Pine brandies on the seed-bed until after germination. 



Use tall transplants for planting in the open, owing to animal 

 dangers. 



Red Birch is said to do well when planted with Pine on aban- 

 doned fields, or when planted with Beech naturally regenerated. 



I. Hickories: All hickories require strong, deep fresh, soil. 

 Not on clay. 



Pignut is satisfied with more sand, and jMockernut with more 

 clay. 



Butternut requires water, more than the others, and stands 

 inundation. 



All hickories require hot summers but stand severe winters; 

 continental climate is better suited than sea climate. 



Tap-root of yearling one foot long; of two year old plant one 

 and three-quarter feet; hence transplanting after two years very 

 difficult. 



Height growth begins in the case of Hicoria ovata to set in 

 from sixth year, and is good then. 



Age 5 years, average heiglit 2.4 feet. 



Age 10 years, average height 7 feet. 



Age 15 years, average height 13 feet. 



Age 20 years, average height 20 feet. 



Buds open late but shoot is quickly made. 

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