His works include: •
Tryphiodōrou Iliou Alōsis. De plurimis mendis purgata, et notis illustrata a T. Northmore (Greek), London, 1791; reissued with a Latin version in 1804. • ''Plutarch's Treatise upon the Distinction between a Friend and Flatterer, with Remarks,'' London, 1793. •
Memoirs of Planetes, or a Sketch of the Laws and Manners of Makar. By Phileleutherus Devoniensis, London, 1795. In this work a
utopian form of government is described. •
A Triplet of Inventions, consisting of a Description of a Nocturnal or Diurnal Telegraph, a Proposal for an Universal Character, and a Scheme for facilitating the Progress of Science; exemplified in the Osteological part of Anatomy, Exeter, 1796. •
A Quadruplet of Invention, Exeter, 1796; an augmented edition of the ‘Triplet.’ • An edition of
Thomas Gray's
Tour through England and Wales [1799]. •
Of Education founded upon Principles. Part the First. Time: previous to the Age of puberty, London, 1800. •
Washington; or Liberty restored: a Poem in ten Books, London, 1809; Baltimore, 1809; notice in ‘Quarterly Review,’ ii. 365–75. In ''
Nicholson's Journal he wrote on Effects on Gases by change in their Habitudes, or elective Attractions, when mechanically compressed,
1805 (vol. xii. p. 368), and on Experiments on condensed Gases,'' 1806 (vol. xiii. p. 233). ==References==