Terrets, however, are supposed to look well, and to have the advantage of keeping the head steady. To obviate their disadvantages, therefore, in some measure, rollers are placed in the bottom of each terret, over which the rein passes. This, in some degree, obviates the evil, as the rein no longer holds in the terret, but slides easily, giving the wheeler’s head more freedom. In all kinds of work, a tool-box is a necessary appendage to the coach. It should contain a strong screw-wrench, wheel and spring clips, a spring shackle or two, with bolts and nuts, and two chains--one for a trace, and the other shorter, with a ring at one end and hook at the other, in case of a tug giving way. In his pocket the coachman should have a short strap with a buckle at each end, as in case of almost any part of the reins, or indeed most parts of the harness breaking, it comes into use in a moment. The following are interesting extracts on this subject, from an article in a late number of the _Quarterly Review_; and the work quoted and referred to in the article is intitled Bubbles from the Brunnens of Nassau. “With regard to the management of horses in harness, perhaps the most striking feature to English eyes is, that the Germans intrust these sensible animals with the free use of their eyes. ‘As soon as, getting tired, or, as we are often apt to term it, lazy, they see the postilion threaten them with his whip, they know perfectly well the limits of his patience, and that after eight, ten, or twelve threats, there will come a blow. As they travel along, one eye is always shrewdly watching the driver; the moment he begins his slow operation of lighting his pipe, they immediately slacken their pace, knowing as well as Archimedes could have proved, that he cannot strike fire and them at the same time: every movement in the carriage they remark; and to any accurate observer who meets a German vehicle, it must often be perfectly evident that the poor horses know and feel, even better than himself, that they are drawing a coachman, three bulky baronesses, their man and their maid, and that to do this on a hot summer’s day is no joke.’