Water boils off as steam and maple sap becomes
thicker. After testing with thermometer or by
hydrometer, it is drawn off as syrup, being con-
tinually replaced with fresh sap. This final boil
is often done in separate finishing pans to better
control the exact density.
COLOR
Mike Roberts
BERKELEY 2, CALIF.
C18017
VT894-Color Photo by Robert B. Frazier
Published by Bromley & Company, Inc., Boston 15, Mass.
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