Hearn published several books. "Plutology, or the Theory of the Efforts to Satisfy Human Wants", a political economy textbook which was well regarded by economists such as William Stanley Jevons and Francis Ysidro Edgeworth, although there is some indication that Hearn's book was derived from that of several less well known English writers. "The Government of England", a work on British constitutional law, was praised by Dicey as teaching him more about the way in which early constitutional principles were developed than any other work.