REFEIGERATOK CARGOES

413

River Plate, but on the longer voyage from the Colonies the trade is
yet an experimental one.

The cross section through a ship shows the arrangement of refriger-
ating plant on the C02 system adapted for carrying "mixed cargo, such
as frozen or chilled meat m the holds and fruit or dairy produce in the
'tween decks. The holds are cooled by brine pipes and the 'tween
decks by air circulation, the air being cooled through being circulated
by a fan over a nest of brine pipes. Arrangements are usually made in
the air trunks for replacing the air in these chambers by fresh air when
required. See also pages 607-609.

Fig. 6.
Carriage of Fruit,—The insulation for fruit carrying is similar to that
for the carriage of frozen meat, in fact fruit is often carried in "mesV
ships. It is important that a good air circulation should be maintained
throughout the hold and that the fruit is carried at the proper
temperature.
The different kinds ol fruit are carried in cases or boxes (skeleton or
otherwise) of a size and design best suited to keep it in good condition.
Colonial apples are generally packed in skeleton cases, choice fruits
from South Africa and Australasia being shipped in small boxes. Laths
or 1-inch square battens are used to separate the packages and allow
the air to circulate between them. Some Colonial apple cases are
designed to allow air circulation without the use of loose battens to
separate them.