Planaria worms

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Plate 49 from the paper 'Observations on the genus planaria', by James Rawlins Johnson, Philosophical Transactions of the Royal Society, vol.112 (1822), pp.437-447. Seventeen figur es pasted onto a backing sheet, showing the species: P.cornuta; P.torva; P.brunnea; and P.lactea. With publication and plate details inscribed. Initialled lower left 'J.R.J.delint.' Watermarked 'G&A 1818'.Original: ink on paper. 1822 Show more