Issue 4 and Volume 69.

QUESTIONS AND ANSWERS Conducted “He that questioneth much shall learn MUCH”—BACON NOTE Readers of FIRE AND WATER ENGINEERING are invited to send in questions, which will be answered in the order in which they are received. Names are omitted from questions unless otherwise specified. Prevention of Algae Growth To the Editor: Dubuque has a circular, concrete, open reservoir, 180 feet diameter and 41 feet deep; capacity about 7,500,000 gallons. This reservoir is located at an elevation of about 200 feet above the pumping station and about 3 miles distant from it. The excess water pumped, beyond that required for daily consumption, goes into the reservoir. There is only one pipe from this reservoir, which acts as both inlet and outlet. We are experiencing great difficulty in keeping the water fit for use in this reservoir. The growth of algae is so rapid that it is necessary to drain and clean…

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