OF ASH IN FOREST TREES. 



315 



8. White Elm ( Ulmus americana) . 



Sap -wood. Heart wood. Outside bark of trunk- 



Water - 34-65 49-50 19-00 



Dry - 65-35 50-50 81-00 



Ash - 0-80 0-35 8-25 



The elm gave, on ignition in a close vessel, 15*84 per centum of charcoal, or matter free 

 from volatile elements : subtracting the inorganic matter, it leaves 15*04 per centum of 

 pure charcoal. The outside bark of this elm consists of alternate layers of common lig- 

 neous matter and cork, which, though thin, is fine and elastic. 



inside dilto. 



Bark of limbs. 



Wood of limbs. 



47-50 



42*60 



36-50 



52-50 



57-40 



63-50 



7*25 



7-50 



0-45 



9. Chestnut (Castanea vesca) . 



Wood of the trunk- 

 Water 42-35 



Dry - 57-65 



Ash ....... 0-48 



The percentage of charcoal in this wood amounts to 9 "75 only : ash being deducted, 



leaves 9*27. 



10. White Maple {Acer dasycarpum) ■ 



Sap wood. Heart wood. 



Water - - 35-50 37-50 



Dry 74-50 62-50 



Ash - - - 0*25 0-20 



Bark of the trunk. 



Bark of limbs. 



Wood of limbs. 



40-00 



41-45 



31-00 



60-00 



58-45 



69-00 



3-25 



2*75 



0-35 



11. Willow. Trunk ten inches in diameter. 



Water 



Dry 



Ash 



Sap wood. 



59-55 



40-65 



0-28 



Heart wood. 



37-45 



62-55 



0-25 



Bark of the trunk. 



41-10 



58-90 



6-26 



12. Grape vine ( Vitis labrusca) . 



Water - 



Dry - 



Ash - 



Wood. 



40-26 



59-74 



0-98 



13. Black Ash. Seasoned wood. 

 Ash 



Sap wood. 



0-34 



Eark. 



8-19 



