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Signed in ink lower left 'W
West side of old London Bridge
East view of the quadrangle of St Peter's Hospital
The weather in 1879 was just as likely to spoil a summer garden event as it is in the 21st century
Hauksbee air pump mb-code 1193468 Signed in ink lower leftAir pump designed by Francis Hauksbee. Air pumps allowed experimenters to create a partial vacuum in the glass bell at the top of the device by pumping air out using the handle. Apart from proving that a vacuum was possible, the air pump gave rise to many experiments such as studying the effects of rarefied air on combustion, magnetism and sound. ca. 1709
