He then commenced residence as curate of Compton, Berkshire, and continued there until 1788, in which year he received institution to the vicarage of Froxfield, Wiltshire, where he held the living until his death.
In 1799 he was appointed first mathematical master at the Royal Military Academy, Woolwich, in which post he laboured until 1820.
Evans for many years employed himself as a skilful and successful observer, having his own private observatory on Woolwich Common.
To the Philosophical Magazine Evans contributed the following dissertations: ‘An improved Demonstration of Newton's Binomial Theorem on Fluxional Principles’ (vol.
); ‘Observations of α Polaris for determining the North Polar Distance of that Star at the beginning of 1813’ (vol.