Dr George Merryweather of Whitby exhibited his legendary Tempest Prognosticator at The Crystal Palace in The Great Exhibition of 1851. Consisting of twelve leeches in bottles within a structure resembling an indian temple, a replica is on show at Whitby Museum. There is a picture of it at the bottom of this page.
Although no pictures of it are available, apparently a fully working replica with live leeches exists at Barometer World in Devon.
The Tempest Prognosticator, or Leech Barometer as it is sometimes known, is athing of great beauty and strangeness. Here are two examples of imaginations that have been fired by this odd construction.
Honeypear is a cartoonist from Glasgow. This is her homage to Dr Merryweather.
(Click on the image to see the full cartoon)
Here are some Japanese youths in a car park dancing to If The Rock Don't Get You The Heavy Metal Will by a band called The Tempest Prognosticators.