So. Woodstock, Vermont. A closeup of the tap that is put into a maple tree to collect the sap. - The sap will not run unless the temperature is freezing at night. Following the freezing, the next days temperature must go up into the 40's or 50's for the sap to run.

Digital Commonwealth — Boston Public Library

So. Woodstock, Vermont. A closeup of the tap that is put into a maple tree to collect the sap. - The sap will not run unless the temperature is freezing at night. Following the freezing, the next days temperature must go up into the 40's or 50's for the sap to run.

Patriquin, Warren, 1922-1997 · [ca. April 1960]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Maple Sugar

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