188 



Disiribution of Inorganic Matter in Vegetables. [April, 



Per cent of water, - 

 " dry wood, 



" ash. 



Wood of limbs. Bark do. 



23.70 36 25 



- 76.30 63.75 

 1.15 3.50 



Outside bark of trunk. Inside do. 



Percent of water, - - 17.35 44.35 



drv wood, - 83.65 55.65 



ash, - - 10.00 5.00 



White Elm — ( Ulnius americana.) 



Sap wood. Heart wood. 

 Per cent of Avater, - - 34.65 49.50 

 drv wood. - 65.35 50.50 



ash, - - .80 .35 



The wood of this Elm gave charcoal 15.84 per cent. Deduct- 

 ing .80 for inorganic matter, leaves 15.04 per cent of organic 

 matter left, after ignition. 



The outside bark of this Elm consists of alternate layers of 

 common ligneous matter and cork, which, though thin, is quite 

 elastic. 



