Water supply
Simple Science
Water supply
The Water Problem of a Large City:
It is by no means unusual for the residents of a large city or town to receive through the newspapers a notification that the city water supply is running low and that economy should be exercised in its use. The problem of supplying a large city with an abundance of pure water is among the most difficult tasks which city officials have to perform, and is one little understood and appreciated by the average citizen.
Intense interest in personal and domestic affairs is natural, but every citizen, rich or poor, should have an interest in civic affairs as well, and there is no better or more important place to begin than with the water supply. One of the most stirring questions in New York to-day has to do with the construction of huge aqueducts designed to convey to the residents of the city, water from the distant Catskill Mountains. The growth of the population has been so phenomenally rapid that the combined output of all available near-by sources does not suffice to meet the increasing consumption.
Where does your city obtain its water? Does it bring it to its reservoirs in the most economic way possible, and is there any legitimate excuse for the scarcity of water which many communities face in dry seasons?
Journeys Made by Molecules
The Instability of the Air
Plants as a Source of Dyes
A Test of the Preceding Statement
Temperature
The Lever
The Attractive Power of a Magnet
The Structure of the Ear
Musical instruments
Applications of the Lever
Good and Bad Mirrors
Resistance
Test your English Language
Sunil Bharti Mittal
Most Expensive Cars in the World
Management Mantras
Kiran Bedi
Healthy Nose
Best Places to Celebrate New Year




