Theatre Royal, Haymarket, made perfectly warm by a powerful air stove in the centre of the pit : on Friday evening, March 10, 1820, and every Monday, Wednesday & Friday, during Lent : Lloyd's dioastrodoxon, the largest and most magnificent orrery in the British Empire and the only transparent orrery ever yet offered to the public.

Licence: Public Domain Mark

Credit: Theatre Royal, Haymarket, made perfectly warm by a powerful air stove in the centre of the pit : on Friday evening, March 10, 1820, and every Monday, Wednesday & Friday, during Lent : Lloyd's dioastrodoxon, the largest and most magnificent orrery in the British Empire and the only transparent orrery ever yet offered to the public. Source: Wellcome Collection.