Mae'r cwcis hyn yn gwbl angenrheidiol ar gyfer weithrediad y wefan.
Rydym yn defnyddio Google Analytics i fesur sut ydych yn defnyddio'r wefan er mwyn i ni ei wella yn seiliedig ar angen defnyddwyr.
Gall y cwcis hyn gael eu gosod gan wefannau trydydd parti a gwneud pethau fel mesur sut rydych yn gwylio fideos YouTube.
Amgueddfa Cymru
Notebook belonging to member of Llewelyn family titled 'Photogenic Recipes 1849'. Contains recipe for 'Calotype Paper 1846'. It also contains collection of formulae for various photogenic processing - including recipes for 'Copying Paper', 'Photogenic Paper as used by us at Tenby', 'Talbotype Recipe', and one used by 'Mr. C. Jones Oct 1849' and 'Directions for the Calotype sent by Mr Hunt to Miss Dillwyn 184'. The last notes are a list of 'Materials used by Mr Llewellyn for printing many years up to 1862'.
Red, brown and cream marbled cover with dark green silk binding thread at spine.
