Note the sea lion pool was actually the duck/swan lake with a fence running down the middle. Jim Alexander, what do you suppose the filtration system was like?
Tuesday, June 10, 2008
Vintage Belle Isle Zoo--Detroit, Michigan--1908
Posted by
Wade G. Burck
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2 comments:
The filtration system was a drain and a refill of fresh, probably free water.
Jim,
That's similar to a "Crimping the hose" flow regulator system is it not.
Wade
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