The second generation of the Hudson River school, working between about 1850 and 1870, approached landscape with the midcentury's clear realism. Concentrating on effects of light and atmosphere (in a manner known as luminism), they produced extremely detailed paintings in a precise technique that left hardly any trace of brushwork. The leading figure of this generation was Cole's only pupil, Frederick E. Church. With his thorough knowledge of natural history and his inexhaustible technical facility, he painted such natural spectacles as Niagara Falls (1857, Corcoran Gallery, Washington, D.C.) and South American wonders such as Cotopaxi (1863, Reading, Pennsylvania, Public Museum and Art Gallery) on immense canvases that toured the country to crowds and acclaim. The German-trained Albert Bierstadt had a similar success with large, theatrical paintings of Rocky Mountain scenery. Fitz Hugh Lane painted crystalline views of New England harbors. John F. Kensett and Martin J. Heade painted modest-sized landscapes in the luminist manner.