Free Water - Free water, is water, that is flowing. A form of H2O. Free water is loaded in the vessels and tracheids. Then when the water is moved and bound to the walls of cellulose it is no longer free water it is bound water. The way water changes from free to bound, and back again, is one the wondrous processes of nature. When the water becomes unbound it is then free water again. Free water moves only in the latewood of the current increment during the end of the growth period in some tyloses- forming species of ring-porous trees such as American elm. See "Water".
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