Royal Society (page 31)

Temporary observatory for pendulum observations, Sumatra unknown

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Anonymous

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Anonymous

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Anonymous

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Anonymous

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

Swan marks of Lincolnshire Anonymous

Swan marks of Lincolnshire Anonymous

Swan marks of Lincolnshire Anonymous

Surgically removed tumour Caleb Burrell Rose

Superficial sore on a human leg Franz Andreas Bauer

Sunken cliff near Folkestone Harbour John Lyon

Submarine diving suit in operation William Barlow

Submarine diving suit William Barlow

Study of five fish Anonymous

Studies of volcanic ash clouds Antonio Piaggio

Studies of two fishes from Australia Anonymous

Studies of two fishes from Australia Anonymous

Studies of two fishes from Australia Anonymous

Studies of two fishes Sarah Stone

Studies of three fishes from Australia Anonymous

Studies of three fishes from Australia Anonymous

Studies of the silk worm and other insects T Cole

Studies of hydrodynamic shapes Mark Beaufoy

Studies of four varieties of squid Benard

Structure of the Milky Way galaxy William Herschel

Stratford engine, London John Smeaton

Stones and crystals in the Royal Society's Repository Anonymous

Stone coffins at Wardlow, Derbyshire Samuel Evatt

Stone antiquities found at Netherby Anonymous

Stone antiquities found at Netherby Anonymous

Stomachs of viper, frog, turtle and blue shark William Clift

Stomach of the dugong William Clift

Stomach and duodenum of the Squalus maximus [Basking shark] John Howship

Steel yard balance swing Timothy Sheldrake

Steamship coaling Anonymous