CHAPTER III
HOW TO MEASURE WATER-POWER
What is a horsepower?--How the Carthaginians manufactured horsepower--All that goes up must come down--How the sun lifts water up for us to use--Water the ideal power for generating electricity--The weir--Table for estimating flow of streams with a weir--Another method of measuring--Figuring water horsepower--The size of the wheel--What head is required--Quantity of water necessary 32