Royal Society (page 49)

Parhelia observed in Kent Henry Miles

Parhelia observed in Kent William Stukeley

Pallazzo Romani, Padula Alphonse Bernoud Grellier

Pallazzo Romani, Padula Alphonse Bernoud Grellier

Pallazzo Palmieri, Polla Alphonse Bernoud Grellier

Ox-eye daisy Richard Waller

Ovum of a hen and egg yolks Franz Andreas Bauer

Ovaries of the hen Franz Andreas Bauer

Ovaries of the hen Franz Andreas Bauer

Ovaries of Ornithorhynchus paradoxicus [Platypus] Franz Andreas Bauer

Ovaries of an American Opossum Franz Andreas Bauer

Ovaries of a pig Franz Andreas Bauer

Ovaries of a pig Franz Andreas Bauer

Ovaries of a kangaroo Franz Andreas Bauer

Ovaries of a cow Franz Andreas Bauer

Ovaries and testes of the lamprey and conger eel Franz Andreas Bauer

Orrery demonstrating the transit of Venus Benjamin Cole

Orrery demonstrating the transit of Venus Benjamin Cole

Orkney seal skull William Clift

Optical effects in crystalline materials under pressure David Brewster

Optical effects in crystalline materials under pressure David Brewster

Optical effects during the heat treatment of glass David Brewster

Optical effects during the heat treatment of glass David Brewster

Optical effects during the heat treatment of glass David Brewster

Optical effects during the heat treatment of glass David Brewster

Open chest cavity Walwert

Old and new methods of stern framing in merchant ships Robert Seppings

Ocythoe cranchii [winged argonaut] Anonymous

Obverse of the Rumford Medal Anonymous

Oat grass with smooth spikes & sparsed panicles Richard Waller

Oak bush-cricket legs Franz Andreas Bauer

Nuattainia and Lichas, species of trilobite Henry James

Northern planisphere, from John Flamsteed's 'Atlas Coelestis' unknown

North Esk bridge John Smeaton

North East view of the Stable Lean-toà [of Heckingham Workhouse, Norfolk] Anonymous

North American Box Turtle J D C Sowerby