A notebook containing notes on ethics and philosophy and translations of hymns into Welsh by J. T. Lewis.

Miscellaneous papers relating to the parish of Llanfihangel-ar-arth, Carmarthenshire, - minutes of parish meetings, 1832; extracts from vestry books; overseers' papers; correspondence of Josiah Rees, rector of Llangrannog, and David Phillips, Pantglas, 1864; notes on the history of the parish; notes on the family of Stephens of Alltfechan; and an essay entitled 'Traethawd ar gyfansoddiad y Meddwl'.

A Latin treatise on universal philosophy, [c. 1590], attributed to R. D. Arrowsmith (f. 1), whose identity has not been further established: 'Tractatus In vniuersam Philosophiam prolectore R. D. Arosmitheo Incipiunt Prolegomina in eadem die mensis Januar[ii] 29' ('1590' added by another hand). First line, 'Philosophiæ: nomine præstantissima rerum omnium cognomine ...'; last line, '... mensurari tempore eas tamen operationes anime separatæ mensurari pronunc temporis discreti' (ff. 1-357 verso).
Marginal glosses have been added by the scribe and another hand of similar date, including the following: 'men are false and so are you/neuer nature fram[']d a creature/to enjoy and then proue true', [17 cent., first ½] (f. 137).