Show the immensity of london it if tho the city ot of ondon london I were suin surrounded tid by a wall having a north gate a south gate an east gate and a west gate and each of 0 tho the four gates were ot of sufficient width to allow a column of 0 persons to pass out freely four abreast and a peremptory necessity required tile tho immediate evacuation of 0 the city it could not be accomplished under thirty six hours by the expiration of which time the head bead ot of the four columns would have advanced a no less distance than miles irom from their respective gates the head ot of the column moving north would have reached lincoln while the last file was passing out ot of the london gate |