Diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llandrillo, Llandderfel, Llanfor, Llanycil, Llanuwchllyn and Llangower in Merioneth, Llangynog and Pennant Melangell in Montgomeryshire and Llangwm, Denbighshire; a few notes on a system of short-hand writing.

'Clustnodwr neu Lyfr Clustnodau Defaid', being a volume containing diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llangynog, Pennant Melangell, Llanrhaiadr ym Mochnant, Llanwddyn and Hirnant in Montgomeryshire, Llandrillo, Llanfor, Llandderfel and Llangower in Merioneth and Llangwm in Denbighshire, 1827.