At a turn of the corner, however, as luck would have it I was pulled up short by a mounted policeman. He blocked the road with his horse, like an ogre, and asked me, in a very gruff Swabian voice, if this was a licensed bicycle. I had no idea, till he spoke, that any license was required; though to be sure I might have guessed it; for modern Germany is studded with notices at all the street corners, to inform you in minute detail that everything is forbidden. I stammered out that I did not know.