Solid porcelain sinks are all made from the same material, yet the action of fire affects some differently from others. For instance, a workman may fail to work out of the wet mould a bit of air in the clay, and when this piece is fired in the kiln the air condenses and bursts out and the result is a slight streak; or a bit of copper may get into the clay causing a green stain on the piece. When such things occur, it does not alter the value of the sink, but the high grade manufacturer marks these “second grade.” This is well for you to know as it really does not effect the lasting qualities and probably the initial cost is lower. The shallower a sink is the easier, of course, it is to take care of. The general run of sinks has the metal base with a porcelain-like covering, as they are elastic and are kind to falling china. However, you cannot go wrong in buying any of the enameled, or porcelain over iron, or the solid porcelain, bought from the well-equipped, long established manufacturies. There is one firm which makes a superb solid porcelain sink in thirteen varieties, including two vitreous (porcelain over metal) slop sinks. When you think of one firm making so many varieties, and a few other firms making almost as many, it soon becomes necessary for the domiologists to know what to tell a plumber to install, before the masculine mind installs something for which you will have little use. Of course, it depends first on what the sink is to be used for. In large kitchens, the pot sink, vegetable sink, and slop sink are used, sometimes two of some of these varieties. In the medium kitchen, the pot sink and one of the others. In the small kitchen, just the ordinary pot sink is used. Do not buy an all-roll sink; that is, a sink with a curved rim and no back, unless your kitchen has a tiled wall. Why? Because your wall will be splashed to the destruction point. Very commodious sinks measure 5′ 2″ over-all, back 9″ high, wall to front, 26¹⁄₂″. This size sink is often in two divisions, one for washing, and one for rinsing, and has integral drain boards (of self material as part of the sink). If the integral drain board is not of wood or metal, it can be rendered kindlier to china by a rubber mat. Some sinks have a 5′2″ back, some just have a porcelain back behind the faucets. A small sink a little over 3′ can be had with or without integral drain boards on either side, and a vent at the right end, so as not to interfere with the dishes. Speaking of drain boards, it is very often expedient to have them hinged to the wall, or so attached to the sink that they can be let down and out of the way. PATENTED MATERIALS