For packing between the nest and
the outer container some material
which heat will not pass through
quickly must be used. First, line the
box or other container with layers of
paper to keep out cold air. Lint, cot
ton. wool, shredded newspaper or ex
celsior are good for packing. The
packing should first be placed in the
outside container to a depth of four
Inches, then place the cardboard or
asbestos for the bottom of the nest.
