... MR HENDERSON AT MUSSELBURGH. Mr Henderson, who is opposed to Mr Moncreiff candidate for the Leith district of burghs, met the members of his committee Musselburgh Tuesday evening, the Town Hall. There were about eighty persona present, including Provost Campbell, Colonel M*Niven, Major Hope of Pinkie. Bailie Stewart, Cooncillor* Peter Miller, Smart, and Whitelaw, Robert Brown. Esq. of Gilston, ...