Royal Society (page 55)

Instrument for perspective drawing James Peacock

Instrument for perspective drawing James Peacock

Instrument for perspective drawing James Peacock

Instrument for observing zodiacal light Charles Piazzi Smyth

Insects in the Royal Society's Repository Anonymous

Insects from Linnaeus's 'Academic delights' Johann Rudolf Schellenburg

Insect studies with human spermatozoa T Cole

Inhabitants of Tierra del Fuego Francesco Bartolozzi

Ingress of Venus during the 1769 solar transit William Hirst

Ingress of Venus and 'Black drop' effect during the 1769 Transit of Venus William Hirst

Indian Roofed Turtle J D C Sowerby

Indian elephant eardrum and mastoid cells William Clift

Indian elephant eardrum William Clift

Indian elephant Andreas Lorenzen Rothgiesser

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Indian cobra Annada Prasad Bagchi

Improved machine for sampling sea-water at depth Francis Marcet

Improved electrical machine at Teyler's Museum Izaac Jansz de Wit

Impressions on the reverse of Tab 13: Shoots of oak trees Marcello Malpighi

Images of objects seen through prisms C Laplante

Ideas for Smeaton's Lighthouse on the Eddystone Rocks James Record

Ichthyosaur ribs fossil Anonymous

Hydra, from John Flamsteed's 'Atlas Coelestis' Anonymous

Hyaena jaw Thomas Webster

Hyaena jaw Mary Morland

Hyaena jaw Mary Morland

Human stomach William Clift

Human placenta William Clift

Human placenta William Clift