of oxygen—just enough to raise the oxygenation of the air to the standard of the best country places. And similar appliances will be at work in the streets of our cities, so that town air will be just as wholesome, just as tonic and invigorating, as country air. If the theory that the presence of ozone (that is, allotropic oxygen) in the sea air is beneficent stand the test of time, no doubt ozonators will form part of these appliances: but in any case, as the high buildings of the new age will keep out the sunlight, electric light, carrying all the ray-activity of sunlight, and just as capable of fostering life and vegetation, will serve the streets. Thus, so far as hygiene goes, town life will be on a par with country life: but many people will prefer the country, and means will have to be provided to render homes in the country compatible with work in the cities. This brings us to the question of transport.
I do not think that people will, within the next hundred years at all events, travel to and from work in flying-machines. But no doubt the system of railway transport will be revolutionised. What makes suburban travel so slow is, not so much lack of speed on the part of the trains, as the necessity for frequent stoppage. You cannot satisfactorily run a train at sixty miles an hour and stop it every minute or so: otherwise sixty miles an hour
