A biographical sketch of Eli Whitney (1765-1825) from Cassier's Magazine, covering his youth in Massachusetts, his years at Yale, and his invention of the cotton gin in Georgia in 1793. It describes the gin's saw cylinder, brushes and fan, the patent disputes and lawsuits that kept him from profiting, and the state payments for patent rights. It also covers his musket contract with the US government and his system of interchangeable parts, and closes with notes on his character and household inventions. Illustrated with a portrait and a photograph of Phinizy's Old Mill near Augusta, Georgia, where the gin was first operated.