Darwin's lost microscope: the auction of a history-making 'box of brass' – video

The first microscope used by Charles Darwin was up for auction at Christie's this week, and this video tells the story of its discovery and importance. This intricate and rather beautiful 'box of brass' contains the microscope used by Darwin at university in Edinburgh and Cambridge as he studied botany, fine-tuning his microscopy skills prior to and during his Beagle voyage. The auctioneer describes the microscope as one of the most exciting lots they've handled, with collectors queuing up to get their bids in