240 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1911. 



Table I. — Experiment on the sterilization of water polluted with B. coli {Miquel). 



After having made these trials (we cite but two of them), Miquel 

 wished to put the apparatus to a far more difficult test, the destruction 

 of the spores of the bacilli. He polluted the water to be sterilized 



Fig. 3.— Early device of Th. Nogier. 



"with a far more resistant species of microbes than the colon bacilli 

 and having very durable spores, related to if not identical with, the 



Table II. — Another experiment on the sterilization of water polluted with B. coli. 



