342 You're holding up more than a Canal-Boat! Road, rail and canal— three fine working partners in handling the vast war traffic. And War has taught us again how useful a partner is our canal system. But if canal-boats are kept needlessly idle waiting for loading and unloading, they cannot play their full part. When- ever you keep a canal-boat one unnecessary hour you delay our whole transport system, holding up perhaps a fleet of lorries or a large train of wagons. You don't see the hold-up, but it happens just the same.