456 
Combating Lousiness 
have been found inefficient since they do not generate a sufficient volume 
of steam in a given time. Lelean (loc. cit.) states that a hot fire in the 
furnace fills the barrels with steam in 40 minutes. 
D 
Fig. 14. Illustrating four ways of arranging barrel steam disinfectors. (A and B) according 
to Ulilenhuth and Olbrich, and (G and D) according to Lelean. For description see text. 
( d) Whilst Teske (1915, p. 346) mentions the use of barrel disin¬ 
fectors, Ulilenhuth and Olbrich (1915, p. 447) describe and illustrate two 
methods of using such barrels in connection with a general plan for 
