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DISCUSSION
OBSERVATIONS OF SOME EUROPEAN WATER PURI-
FICATION AND SEWAGE DISPOSAL PLANTS 1
By Edward Babtow
A Member: What amount of iron is in the Berlin water?
Mb. Bartow: About two parts per million, but they are very
particular, they do not want any.
A Membeb: At the Dresden plant, how much is the turbidity.
Mb. Babtow: The Dresden plant has a well water, which is
clear when it is first drawn, the manganese separates on exposure
to the air.
1 Paper published in Vol. 2, No. 1, March, 1915, Journal at p. 13, etc.
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