Even the tiny trout brook becomes a thing of utility as well as of joy Farm labor and materials built this crib and stone dam Measuring a small stream with a weir Efficient modern adaptations of the archaic undershot and overshot water wheels A direct-current dynamo or motor, showing details of construction Details of voltmeter or ammeter Instantaneous photograph of high-pressure water jet being quenched by buckets of a tangential wheel A tangential wheel, and a dynamo keyed to the same shaft—the ideal method for generating electricity A rough-and-ready farm electric plant, supplying two farms with light, heat and power; and a Ward Leonard-type circuit breaker for charging storage batteries
