irt wood. 



Wood of twigs. 



Bark of twig 





37-40 



35-61 





62-50 



64-39 



0-26 



0-47 



5-53 



Heart wood 



Wood of twigs. 



Bark of twig3 



36-96 



21-45 



23-83 



63-04 



78-55 



76-17 



0-301 



0-64 



9-321 



62*739 



77-91 



69-07 



0-475 



0-815 



9-321 



OF ASH IN FOREST TREES. 

 4. Beech wood (Fagus sylvestris) . 



Sap wood. 



Water - . - - - 40-45 

 Dry .'....- 59-55 



Ash .... 0-85 



The percentage of charcoal in beech wood amounts to 17-16. Deducting 0-85 for in- 

 organic matter, it leaves 16 • 94 from which all volatile matter has been expelled by ignition 

 in a close vessel. 



5. Iron- wood (Ostrya virginica) . 



Sap wood. 



Water - - -'- - 30-00 



Dry .... 65-00 



Ash .... 0-196 



Organic matter - - 64*805 



Calculated dry - - 0-300 

 The iron- wood, when ignited in a close vessel, gives 16-21 per centum of charcoal, or 

 matter free from volatile substances : deducting 0-30 for inorganic matter, it leaves 15 -91 

 as pure charcoal. 



Seasoned wood of the Ostrya virginica, or Iron-wood. 



Water .... 



Dry - . - 



Ash 



Organic matter - 



Calculated dry ... 

 The Iron-wood is one of the instances in which the percentage of ash is greater in the 

 heart wood than in the sap wood. The tree, as is well known, grows slowly, and never 

 attains a large size ; and the one from which the wood was taken for experiment, was 

 about eight inches in diameter. The seasoned wood was from a small tree about the same 

 size as the preceding, but was one hundred years old. 



6. Broad-leaved Laurel (Kalmia latifolia). 



Wood of the trunk. Wood of the root. Bark of trunk. Leaves. 



Water .... 30-30 36-30 18-73 49-19 



Dry .... 70-00 63-70 81-27 50-81 



Ash .... 0-22 0-10 0-70 1-46 



The percentage of charcoal of this very compact wood amounts to only 7 -30; and de- 

 ducting the inorganic matter, 6-60 is pure charcoal. 



[Agriculturl Report — Vol. il] 40 



eart wood. 



Sap wood. 



Bark. 



14-80 



19-06 



14-30 



85-20 



80-94 



85-70 



0-40 



0-28 



S-06 



84-80 



80-66 



77-64 



0-467 



0-344 



9-406 



