PP/GC/CA/225 Letter from Sir S.Canning to Henry John Temple, third Viscount Palmerston, concerning the vacillation of the Porte and Reschid Pasha on the proposed reforms and financial improvements, bedouin revolts, rights for protestant Christians in Turkey, the Hungarian refugees, the border dispute between Turkey and Persia and the Lord Mayor of London's presentation to the Sultan, 5 November 1850