Theatre Royal, Covent-Garden, this present Thursday, May 14, 1812, will be acted (15th time) Shakspeare's tragedy of Julius Caesar : Julius Caesar by Mr. Egerton ... After which (for the 15th time) a new grand melo-dramatick spectacle, called The secret mine. The musick composed and selected by Mr. Condell ...Covent Garden Theatre[1812]engA playbill, with cast lists.