'Silex quartzum' Finish:Rolled half-facing to the right as

half-facing to the right as viewed

The accompanying text states that: 'The form of the capsules may be understood from the figure

24th May 1961

'Gratitude'

The Duke's Arms tavern

'Silex quartzum' Finish:Rolled half-facing to the right asTwo specimens of Hertfordshire puddingstone, here termed 'Quartzose pudding stone'. Plate 92 from British mineralogy: or coloured figures intended to elucidate the mineralogy of Great Britain, by James Sowerby, volume 1 (London, R. Taylor & Co., 1804). The accompanying text states that 'This is not rare, in gravel pits, in many counties of England; Hertfordshire is however most famous for producing it Pudding stone is little known abroad, and is