A scrap book lettered 'Afonydd Cymru' compiled by John Jones ('Myrddin Fardd'). It contains press cuttings entitled 'Afonydd Cymru' (from Yr Haul, 1870-1, passim), 'Yr Afon Wynion' by 'Glan Wynion', Dolgellau and by 'E' [from Y Cymro], 'Llenyddiaeth yr Afonydd' by 'Idnerth', Buth y Bardd, 'Taith ar hyd Glan yr Afon Ceri, Ceredigion' (incomplete), 'Prif afonydd swyddi Caer yn Arfon a Meirion' by 'Peris'' (from Y Gwyliedydd, May 1833), 'Rhestr o brif lynoedd Cymru', 'Llynoedd Sir Gaernarfon', etc., with annotations and additions in the hand of the compiler.

A transcript of an enrolment, 1561/2, of a report by Thomas Phaer, Kilgerran, on the harbours, ports, and creeks of the principality of Wales.

A manuscript in the autograph of Evan Evans (Ieuan Fardd) containing triads (pp. 1-32); poetry, the poets cited including Taliesin, Dafydd ap Gwilym, Siôn Cent and Gruffydd Dwnn (pp. 33-86, 95-102); a list of Welsh holy (saints') days (pp. 87-90); names of Welsh rivers and their sources (pp. 91-94); etc. The volume also contains an appendix in the hand of D[avid] Ellis, [1787x1788]. The section containing triads is apparently left unfinished as most of p. 32 and the whole of p. 33 are blank.

The file comprises a card index divided into sections on lakes, classified according to area and type, wetlands and rivers, indexed by name, plants, insects, fish and mammals, 1947-1979. Some of the entries are expanded by additional notes on history, geology, distribution and early discoveries of certain species, threats and conservation issues, topographical descriptions, human activities, bibliographic references, preparatory notes and personal reminders, and derivations of place names, sometimes accompanied by press cuttings, species lists, typed reports, sketches and printed pamphlets