Most towns have their town omnibuses. In Paris there is a system of ‘correspondence,’ by which the passenger leaves his omnibus at certain stations and gets (with the same ticket) into another to prosecute his route. But this correspondence is puzzling to a stranger, who will always find it better to take a cab and drive direct to his destination. * * * * * Tramways are beginning to be introduced, with carriages similar to our own, but are generally placed in streets where they will as little as possible interfere with other traffic. In some towns of Italy, such as Milan, there are laid stone–ways, being two parallel courses of flat stones, each course perhaps about a foot broad, embedded in the causeway and on the same level, on which the wheels of carts and carriages run smoothly. It has sometimes struck me that such a system of stone tramways without grooves, on which all carriages could run, and which would not catch their wheels, would be preferable for the streets of hilly cities at home, for which tram rails, especially in its busy thoroughfares, are entirely unsuitable. All the smoothness of the tramway would be obtained without its danger to life, its injury to carriages, and its interference with ordinary traffic; while the huge, clumsy, box–looking, road–filling cars would give place to a set of light omnibuses of sufficient number. The luxury of travelling a mile in a larger car could not be placed in the balance. * * * * * There are other means of conveyance, such as donkeys and gondolas, which will be more appropriately referred to when I come to speak of the places where they are used. IV. _POSTAL ARRANGEMENTS._