Christopher Wren's Greshamite history of astronomy and geometry

In 1657 Christopher Wren became Professor of Astronomy in Gresham College, a post he held until the early months of 1661 - a relatively short period in a long career, but one of the most varied, productive and exciting Wren experienced before, through the burden of official office, he came to specialize in the branch of practical mathematics with which he is generally associated today.