462 
Combating Lousiness 
effects have to be dealt with in a short space of time. Giese (1915, p. 1274) 
describes how this is effected by lining a wooden van with sheet iron, and 
sealing one door and all cracks with felt. Vertical wooden supports are 
screwed to the sides of the van and cross pieces are fixed across the top 
to support 16 lengths of old iron pipes traversing the width of the van 
near the roof. Along these pipes, which serve merely as rods, there slide 
galvanized iron hooks for suspending the articles to be disinfected. A row 
of pipes placed vertically down the middle of the van affords extra 
support to the pipes that cross beneath the ceiling. A steam pipe runs 
beneath the van and is covered with packing to prevent loss of heat; it 
has stopcocks, and two branches conduct the steam vertically up to near 
Fig. 20. Pair of steam disinfection huts. Type B. Worked by a threshing engine 
boiler. Transverse vertical section. Floor area 8 x 10 ft. The dotted lines indicate 
position of doors and steps up at end of hut. (Grant.) 
the roof of the van so that the steam on entering the chamber expels the 
air downward. The air and condensation water escape through four 
holes at the sides in the floor, the holes being closed with wooden bungs 
by loosening which the outflow can be regulated. Inside, near the floor, 
are radiator coils protected by a slatted floor. Wooden slats cover the 
inner walls to prevent rust spots occurring on effects that might other¬ 
wise come in contact with the iron lining of the chamber. All iron pipes 
within the van are covered for the same reason. The door is made to close 
tightly by means of felt. The van is provided with a manometer and a 
thermometer which are visible from the outside. The steam for heating 
and sterilizing is supplied by the locomotive and, working with a 
