Science: Water Clock

UNIVERSITY OF CHICAGO Research Institute requires 30 gal. samples of city of Chicago water at least five yrs. and not more than 20 yrs. old. Phone Midway 3-0800, Ext. 2502, or write 5640 Ellis-av.

For three days the classified ad ran in Chicago newspapers. It brought in no gallons of stale water. A Decatur cistern was tapped for a 29-year-old sample. The water heater of a high-school teacher in Oak Park yielded 30 gallons between five and twelve years old. An undertaker emptied his fire extinguisher and a grocer drained the soda pop cooler...

Want the full story?

Subscribe Now

Subscribe
Subscribe

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!