In heartwood it occurs only in the first and last forms. Wood that is thoroughly air-dried retains 8–16% of the water in the cell walls, and none, or practically none, in the other forms. Even oven-dried wood retains a small percentage of moisture, but for all except chemical purposes, may be considered absolutely dry. COUNT 3
QSN1 What does wood retain in its cell walls despite being air-dried? ANS1 water QSN2 Air-dried wood keeps up to what percentage of the water in its cell walls? ANS2 16 QSN3 What kind of dried wood retains a small quantity of water but is considered absolutely dry? ANS3 oven-dried