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Published 1747
The Season for procuring the Liquor from the Birch-Trees is in the Beginning of March, while the Sap is riling, and before the Leaves shout out; for when the Sap is come forward, and the Leaves appear, the Juice by being long digested in the Bark, grows thick and colour’d, which before was thin and clear.
The Method of procuring the Juice is by boring Holes in the Body of the Tree, and