control of field-water supplies 
257 
a Gould pump, a pressure filter with alum pot and a solution-feed 
chlorinator with siphon- or bubble-meter. It successfully purified 
an impure river water and was an excellent piece of equipment. 
The laboratory space of the sterilab was not used as such but 
used as sleeping quarters for the men in charge owing to the ease 
of taking samples to the stationary laboratory in Le Mans. 
Eaboratorie:s for the State Board of Health, 
State University of Iowa. 
