1. First invented by David Halliday in 1854
2. Self-governing windmill pumping water from underground by pointing into the wind
3. Water used for drinking, watering plants, animals, and irrigation
4. Advantages: pumping water from wells up to 30 feet deep, steel blades for withstanding winds, more powerful pumps developed by 1880
5. Drawbacks: some wells deeper than 30 feet, early pumps needing constant oiling and maintenance