Robert Boyle's barometer Size:M: 75 x 50cm Once beaten by the scutch

Once beaten by the scutch on a scutching-frame

Side view of a Doctorfish [Acanthurus

26th May 1964

or octagon room (right)

View of a Montgolfier balloon being launched on a first flight at Versailles

Robert Boyle's barometer Size:M: 75 x 50cm Once beaten by the scutchFig. 1: Boyle's experiment 'About the greatest height to which Water can be rais'd by Attraction or Sucking Pumps'; Fig. 2: 'Wherein is proposed a way of making Barometers, that may be transported even to distant Countries'; Figs. 3 and 4: 'Shewing that an Oblique pressure of the Atmosphere may suffice to keep up the Mercury at the wonted height in the Torricellian Experiment, and that the Spring of a little included Air may do the same.' Plate 5 from