THE SCREW-DRIVER is used to drive in and take out screws. It ought to have a very hard tough edge and a long handle. When placed in the head of the screw, to drive in, it should be turned from left to right, and in taking out, from right to left. There is a particular way of getting out a screw, which is only to be learned by a little practice. The knack consists in combining with nicety the pressure on the screw-head and the turning of the driver. The young carpenter will now and then find a very stubborn screw and fancy it quite impossible to get it out; but by a little perseverance, he soon finds out the knack of doing it; and what seemed immoveable yields to his skill and strength. There is one thing young carpenters frequently do, and that is, to use their chisels for screw-drivers; the consequence of this is, the spoiling of the chisel, for the edges are sure to break away. [Illustration] THE LEVEL.--Every piece of work should be square and level, except when it is of a curved form, and then it should be reduced to the principles of the circle or ellipse. The level is used in putting up posts, palings, or work of any kind in an upright position. It consists of a hoard of wood, upon which a string is suspended, having a plummet at the end of it, which falls along a straight line at a right angle with the bottom of the level. To obtain a perfect perpendicular and perfect horizontal, the level is placed on the work till the line falls exactly over the nick at the top of the hole. The square is principally applied to things made at the bench, and is used to bring everything made to a _right angle_, so that a true level and perpendicular is thus secured. STUFF. The young carpenter will find it very difficult to work without stuff. He ought, therefore, to purchase a deal sawed into planks or boards, consisting of one three quarters of an inch thick, another one inch thick, and another half an inch thick. He ought, also, to obtain a slab not sawed at all, to cut out as occasion may require. He will then be provided with wood. He must also lay in a stock of various kinds of nails, screws, rings, hasps, hinges, etc., and, above all, a good substantial box to keep his tools and other matters in. This should be divided into compartments, and everything should be arranged in it with neatness and order. LABOUR. The young carpenter ought to be fond of work; and to feel a pleasure in it. Should this be the case, there is scarcely an end to his labours. He may make his hen-houses, his rabbit-hutches, his summer-houses, his boxes, seats, rustic-chairs, lattice-work and palings for his garden, build out-houses, and make book-shelves; in short, amuse himself with the manufacture of a great variety of things, both for use and ornament, and of which he may justly be a little proud.