Jalis or screens of pierced stone were a distinctive feature of Indian architecture, especially in the northern parts of the country. The perforated stone, often worked into beautiful patterns, sometimes of complex geometry, permits sunlight to enter a building while also allowing cooling air to circulate. They also enabled the inhabitants to see out while preserving their privacy. This example was made in Agra, Uttar Pradesh, in the 19th century, but was copied from a late 16th century model. It was purchased for the Museum in India in 1880-82 by Caspar Purdon Clarke.