The rocks that were used to build the walls were probably throw-
aways, unearthed during excavation for homes built more than a
century ago. Each is different. Each was put into place by hand.
The rock walls have seep holes for drainage, preventing pressure
from bringing the wall, and the garden, down. "Somebody had a
plan," Patricia Levine said. Levine is the manager of 66 Center
Street, a bed and breakfast built in 1886 by the Perkins family,
who owned of the lumber mill across the street. Levine also
keeps the garden that climbs the slope next to the house. She
doesn't know who built the rock walls that hold the garden to
the hillside, but she can read the signs -- the walls were the
work of masons who knew what they were doing. "Any wall you can
stand on is a good wall," she says. The retaining wall at the
back of the slope is limestone, probably built at the time of
the house, Levine said. The walls that hold the raised beds are
made of what she calls rubble rock -- the kind she finds under
the ground whe