The general use of horseless vehicles will do more--at any rate in London--towards the sanitation of great cities than all the enactments of county or borough councils. Medical experts are agreed that the condition of the roads, however well kept, in dry weather particularly, is highly conducive to the spread of all kinds of throat diseases, not to mention influenza; while if the roads are neglected, the peril is increased and every sense is offended. Horses, as beasts of burden, should have no place in crowded thoroughfares, and their presence in numbers produces on wood-paving a pernicious and offensive ammoniacal result which anyone can test in, say, Broad Street, after the omnibuses have ceased running for the day, or, rather, for the night. All over London, and even in the suburbs, the streets are Augean stables, which no effort of the Hercules of Spring Gardens or the Guildhall can effectually cleanse. It is estimated that at the present time there are over 16,000 licensed horse carriages in London, besides tradesmens vans and other vehicles, and that 200,000 horses are stabled every night, necessitating the removal of thousands of tons of manure and refuse daily. Noise, too--that distracting rattle and rumble of vans, light carts, omnibuses, and cabs--will be done away with, and how much this will help to restore the nervous system of Londoners who can tell? Horses having almost vanished, the space each one would occupy--some seven feet in length--will be saved on each vehicle, and thus the increase of traffic will be partly provided for. Collisions and the running-down of cars will be unheard of, the steering and stopping powers of the electric motors being perfect. ITS SOCIAL RESULTS The effect of universal electric traction on our social life may be far-reaching and prodigious. It may result in a partial decrease in the resident population of London, the working-classes living largely in the country and travelling up and down at uniform penny fares, clerks and others doing the same; while the wealthy and the well-to-do may use their motor-cars to such an extent as to habitually sleep outside the town boundaries, as may also members of both Houses. Only those persons whose duties compel them, will live within hearing of Big Ben. Society will be still more restless, but its members will be healthier, as fresh air will readily be obtainable. There will be even less time for reading than now. Formal calls will largely cease; friends in luxurious electro-cars will “pop in” _en route_ on short surprise visits, and hospitality will, on the whole, diminish.