The mechanism of a logging chain is extremely simple, positive in action and especially well adapted to the use for which it is intended. The best mechanical inventions often pass without notice because of their simplicity. Farmers have used logging chains for generations with hooks made on this plan without realizing that they were profiting by a high grade invention that embodies superior merit. In yoking oxen to a wagon the hitch is equally simple. The end of the wagon tongue is placed in the ring in the ox yoke, the round hook engages with a drawbolt under the hammer strap bar. The small grab hook is passed through the large yoke ring and is brought back and engaged with a chain link at the proper distance to stretch the chain taut. The process of yoking oxen and hitching them to a wagon is one of the most interesting performances on a farm. The off ox works on the off side, or far side from the driver. He usually is the larger of the two and the more intelligent. The near (pronounced n-i-g-h) ox is nearest to the driver who walks to the left. Old plows turned the furrow to the right so the driver could walk on hard ground. In this way the awkwardness and ignorance of the near ox is played against the docility and superior intelligence of the off ox. In yoking the two together the yoke is first placed on the neck of the off ox and the near ox is invited to come under. This expression is so apt that a great many years ago it became a classic in the hands of able writers to suggest submission or slavery termed "coming under the yoke." Coming under the yoke, however, for the New England ox, in these days of abundant feeding, is no hardship. The oxen are large and powerful and the work they have to do is just about sufficient to give them the needed exercise to enjoy their alfalfa hay and feed of oats or corn. TRAVOY One of the first implements used by farm settlers in the timbered sections of the United States and Canada, was a three-cornered sled made from the fork of a tree. This rough sled, in the French speaking settlements, was called a "travoy." Whether it was of Indian or French invention is not known; probably both Indians and French settlers used travoys for moving logs in the woods before American history was much written. The legs or runners of a travoy are about five feet long. There is a bunk which extends crossways from one runner to the other, about half or two-thirds of the way back from the turned-up nose. This bunk is fastened to the runners by means of wooden pins and U-shaped bows fitted into grooves cut around the upper half of the bunk near the ends. Just back of the turned up nose is another cross piece in the shape of a stout wooden pin or iron bolt that is passed through an auger hole extending through both legs from side to side of the travoy. The underside of the crotch is hollowed out in front of the bolt to make room to pass the logging chain through so it comes out in front under the turned up nose.