Manufacturers are making road drags of steel with tempered blades adjustable to any angle by simply moving the lever until the dog engages in the proper notch. Some of these machines are made with blades reversible, so that the other side can be used for cutting when the first edge is worn. For summer use the steel drag works very well, but it lacks the smoothing action of a well balanced log drag. SEED HOUSE AND BARN TRUCKS [Illustration: Figure 225.--Barn Trucks. The platform truck is made to move boxed apples and other fruit. The bag truck is well proportioned and strong, but is not full ironed.] Bag trucks for handling bags of grain and seeds should be heavy. Bag truck wheels should be eight inches in diameter with a three-inch face. The steel bar or shoe that lifts and carries the bag should be twenty-two inches in length. That means that the bottom of the truck in front is twenty-two inches wide. The wheels run behind this bar so the hubs do not project to catch against standing bags or door frames. The length of truck handles from the steel lift bar to the top end of the hand crook is four feet, six inches. In buying bag trucks it is better to get the heavy solid kind that will not upset. The light ones are a great nuisance when running them over uneven floors. The wheels are too narrow and too close together and the trucks tip over under slight provocation. Platform trucks for use in moving boxes of apples or crates of potatoes or bags of seed in the seed house or warehouse also should be heavy. The most approved platform truck, the kind that market men use, is made with a frame four feet in length by two feet in width. The frame is made of good solid hardwood put together with mortise and tenon. The cross pieces or stiles are three-quarters of an inch lower than the side pieces or rails, which space is filled with hardwood flooring boards firmly bolted to the cross pieces so they come up flush with the side timbers. The top of the platform should be sixteen inches up from the floor. There are two standards in front which carry a wooden crossbar over the front end of the truck. This crossbar is used for a handle to push or pull the truck. The height of the handle-bar from the floor is three feet. Rear wheels are five inches in diameter and work on a swivel so they turn in any direction like a castor. The two front wheels carry the main weight. They are twelve inches in diameter with a three-inch face. The wheels are bored to fit a one-inch steel axle and have wide boxings bolted to the main timbers of the truck frame. Like the two-wheel bag truck, the wheels of the platform truck are under the frame so they do not project out in the way, which is a great advantage when the truck is being used in a crowded place. [Illustration: Figure 226.--Farm Gate Post with Copper Mail Box.] [Illustration: Figure 227.--Concrete Post Supporting a Waterproof Clothes Line Reel Box.]