treat of (something)

treat of (something)

archaic To be concerned with or focused on some subject or topic. The essay treats of the moral and philosophical implications of several theoretical economic models. A brief history of the city was given by the mayor, treating of its establishment as a mining colony in 1887 and its eventual evolution as a major business center for the entire country.
See also: of, treat

treat of

v.
To deal with some subject or topic in writing or speech: The essay treats of courtly love.
See also: of, treat