H. Orr 271 
shown in the plan, but experience with the disinfestor in windy weather has 
proved them to be necessary.) 
A special right-angle elbow thermometer (Fig. 2), scale 60° C. to 160 C. 
should be procured and built into the side wall of the chamber as shown in 
the plan (Fig. 1; see specification). 
Light railway tracks (Figs. 2, 3, 5) are laid into the chamber, 11 ft. of 
track are in the chamber and at least 9 ft. outside, connected with a switch 
or a turntable. From the switch two tracks extend—one into the undressing- 
room and the other into the dressing-room of the bath house. 
Two trucks (Fig. 4) are required, on each of which a rack is built to carry 
the clothing, etc. for disinfestation. The rack is one foot shorter and narrower 
than the chamber, and is so built on the truck as to be 6" from the ceiling. 
The nails or pegs on the rack are 11" apart. 
The truck is loaded in the undressing room—the clothing being turned 
inside out and hung loosely on the pegs—one garment to a peg. As an 
alternative, hangers may be used in place of the fixed cross-bars carrying 
the pegs. Each hanger having hooks for all the clothing and blankets of 
one man. The clothing, etc. is hung on the hanger by the man as he undresses 
and the hanger handed to the attendant, who suspends it from one of the 
two longitudinal bars of the truck. The loaded truck is then wheeled into 
the disinfestor, and the other truck (empty) is wheeled out of the dressing room 
and switched into the undressing room, where it is in turn loaded and made 
ready to take its place in the disinfestor. When the disinfestation is complete 
(twenty minutes at 75° C. or higher) the truck is wheeled into the dressing 
room, unloaded, and switched back again into the undressing room, the freshly 
loaded truck having, in the meantime, been wheeled into the disinfestor. 
These two rooms should be separated by a partition which extends to 
within 18" inches of the floor. The boots and small box respirators, which 
need not be disinfested, are placed under the partition ready to be received 
by the men in the dressing room after the bath. 
If the location of the dressing and undressing rooms does not permit of 
this, the boots and small box respirators should be carried into the bathroom 
by the men, and placed on shelves during the bath. This method has been 
adopted in one Division and works out very well. 
Owing to the paucity of bath-house personnel, each man is as a rule, 
made responsible for the safety of his personal belongings. Supervision is 
necessary, however, to ensure that all articles of clothing and the blankets 
of each man, are disinfested. Two men are required as operators. 
The braziers (Fig. 4) are 24" in diameter, and will hold 100 lbs. of coke. 
At 7 a.m. all disinfestor doors should be open, fires started with a little 
wood, and each brazier three-quarters filled with coke. At 8 a.m. all the 
disinfestor doors should be closed. At 8.30 a.m. the disinfestor will be ready 
for use. The fires require no further attention during the day, beyond the 
addition of a little fresh coke at noon. 
Parasitology xi 
18 
