There is, however, still another element of insecurity in wooden houses. House-breaking is by no means difficult in Tokyo. In the daytime the front entrance is generally closed with sliding-doors which can, however, be gently opened and entered without attracting notice unless some one happens to be in an adjoining room. The kitchen door is usually kept open, and it is quite easy to sneak into the kitchen and make away with food or utensils. Tradesmen, rag-merchants, and hawkers come into the kitchen to ask for orders, to buy waste-paper or broken crockery, or to sell their wares, so that there is nothing unusual in finding strange men on the premises. Sometimes these hawkers are really burglars in disguise come to reconnoitre the house with a view to paying it a nocturnal visit. At night, of course, the house is shut and the doors are bolted or fastened with a ring and staple, but very seldom locked or chained. As the doors are nothing more than wooden frames with horizontal cross-bars, on which boards less than a quarter of an inch thick are nailed, it would not be difficult to cut a hole with a chisel large enough for the hand to reach the bolt or the staple or to clear the whole space between the cross-bars for the body to pass through. But quieter methods are generally preferred. Single burglars usually come in by the skylight, closed at night by a small sliding-door, which does duty as chimney in the kitchen, or crawl under the floor which is some two feet from the ground, by tearing away the boarding under the verandah and come up by carefully removing the loose plank of the floor, under which fuel is kept in the kitchen. If the burglars are in a gang, they naturally come in more boldly than these kitchen sneaks. Once inside, the thief has the run of the house as all the rooms communicate by sliding-doors and are never locked, and the whole household is at his mercy. Since, then, houses are so easy of entry, it might be supposed that burglaries are very frequent in Tokyo; that such is not the case is probably due to the somewhat primitive methods pursued by these gentry and to the effective detective system of the police authorities. The strict police registration of every inhabitant and the easy access of all the rooms in a house make concealment very difficult, and the criminal is readily shadowed as he wanders from place to place throughout the Empire. [Illustration: DOOR-FASTENINGS.]