If the cover screws on, as in the jar at the left, do not
screw it down tight; merely turn it lightly until it stops without
pressure being put upon it. If glass covers that fasten in place with
the aid of a clamp are to be used, as in the jar at the right, simply
push the wire over the cover and allow the clamp at the side to remain
up. Jars of food so prepared are ready for processing.
[Illustration: FIG 11]
[Illustration: FIG. 12]
39. PROCESSING.--The purpose of the water bath is to _process_ the food
contained in the jars before they are thoroughly sealed. Therefore, when
the jars are filled, proceed to place them in the water bath. The water,
which was placed in the sterilizer during the preparation of the food,
should be boiling, and there should be enough to come 2 inches over the
tops of the jars when they are placed in this large vessel. In putting
the jars of food into the sterilizer, place them upright and allow them
to rest on the rack in the bottom. If the filled jars have cooled, they
should be warmed before placing them in the sterilizer by putting them
in hot water. On account of the boiling water, the jars should be
handled with a jar lifter, as in Fig.
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