Microscopic view of an oyster shell Product:Fine art poster showing St Batholomew's Hospital to

showing St Batholomew's Hospital to the left and the tower of St Sepulchre in the distance

'A City Hunt

Pholis gunnellus

Peacock (Physio) Front: Jon Sammels

Microscopic view of an oyster shell Product:Fine art poster showing St Batholomew's Hospital toIllustrations accompanying a letter describing Antoni van Leeuwenhoek's microscopical observations, dated March 1682. An English extract was printed in Philosophical Collections ed. Robert Hooke (London, 1682) no. 5, pp. 152 160. The illustrations show an oyster shell (fig. 6), and Leeuwenhoek's hypothesis about the formation of oyster shells (fig. 7). Original: red chalk on paper. 1682