That evening (6 June) a new mob assembled outside the house of Sir James Stirling, 1st Baronet (the then Lord Provost of Edinburgh) on the south-east corer of St Andrew Square in the New Town. A City Guard sentry box near the house was set upon and smashed to pieces. Edinburgh Castle, learning of the disturbance, lit a beacon fire on the half moon battery, and that signalled a beacon to be lit on Calton Hill. The pre-arranged signal allowed HMS Hind, moored in Leith Docks, to dispatch a company of marines into the city. Combining forces with cavalry from the castle the mob dispersed. Provost Stirling had by then sought refuge in Edinburgh Castle. The local doctor Alexander Wood, was mistaken by the angry mob for Stirling and narrowly avoided being thrown off North Bridge due to the misunderstanding.