April 29, 1777
Posted by sydney on Apr 29th, 1777
The bark of oak now runs; & I am felling some trees. Wwen trees are sawn-off, & thrown, a rushing sound is heard from the but, often attended with a little frothing & bubbling-out of the sap. This rushing or hissing is occasioned by the motion of the air escaping thro’ the vessels of the wood.