240 
ANNUAL REPORT SMITHSONIAN INSTITUTION, 1911. 
TABLE I.—Experiment on the sterilization of water polluted with B. coli (Miquel). 
July 8, 1909. 
Flow per 
hour, 
Nogier’s 
apparatus. 
Liters. 
136.5 
136.5 
138.0 
136.8 
135.1 
Colon bacilli per titer— 
Before. After. 
145, 000, 000 0 in 200 e.e. 
145, 000, 000 0 in 200 c.c. 
145, 000, 000 0 in 200 c.e. 
145, 000, 000 0 in 200 c.e. 
145, 000, 000 0 in 800 c.c. 
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. 
N 
os 
3 
AU BERBALREBRLERELERE 
Fig. 3.—Early device of Th. Nogier. 
He polluted the water to be sterilized 
“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. 
Temperature of Or SBE ac Colon bacilli per liter in 
water— 12 water— 
Flow water— 
Dec. 30, 1909. per c 
hour. 4 “ 
nter- eav- 
ing. ing. Before. After. Before. After. 
Liters. ° $ 
2D ER eet acre caite ae terete aelara 180.0 11.1 12.1 |..-...-.----]------- 55, 200, 000 0 in 400 c.c. 
MS OSE Ree ne Sates oaurtee eae 180.0 ihieal JOEL mesesou See |s esas 55, 200, 000 0 in 400 c.e. 
TF} SAU SSS EUR See el es Bag 180.0 11.1 11.9 | 38,595,000 0 | 55, 200, 000 0 in 400 c.c. 
0S 0) EI oes ee ee SE a te 180.0 Pe 1a ee eaesanosea Root cate 55, 200, 000 0 in 400 c.e. 
GU SAE Ben CeeEeeees cere mer 198. 0 11.0 12309 eee eee ene lence epee 55, 200, 000 0 in 400 c.e. 
Total and mean.........| 182.6 12.0 | 3,595,000 0 | 55, 200, 000 0 in 2 liters. 
