ABSTRACT
Wood is an organic material formed by the growth of cells in living trees. The trees produce this organic matter by the conversion of sap to carbohydrates. This process is aided by photosynthesis. Foodstuffs are consumed in the cambium to form living cells containing protoplasm. These cells subsequently modify and lignify to form the different classes of wood cells. Wood cells are composed mainly of cellulose and the cementing agent lignin. Most woods are slightly acidic.
