TRANSPORTATION OF CITRUS FRUIT FROM PORTO RICO 
of small holes, to which were fitted sliding shutters which could be 
opened and closed at will to regulate the amount of air entering or 
leaving the compartments. The air was circulated over the brine 
pipes on either side and across the compartments athwartships by 
two large centrifugal fans connected in parallel, so that they might 
be used either together or separately. A series of dampers in the air 
3&/NZ Coil s 
Brine Co/ls 
Fig. 1. — Diagram showing the operation of the fans and the air-circulating system 
in the forward part of the ship 
ducts permitted the reversing of the air circulation across the holds. 
In the forward part of the ship the ducts formed by the aprons and 
the sides of the compartments, or holds, are connected by suitable 
ducts which open into air chambers situated on the port and star- 
board sides at the after end of No. 2 between-decks 6 (fig. 1). At the 
point of entrance into the air chambers these ducts are fitted with 
Commonly called " 'tween-decks," 
