The prevalence of defective teeth in this country is the general subject of remark by foreigners; and whoever has traveled in Spain and Portugal is struck with the superior soundness and whiteness of teeth in those countries. Though not a cleanly people in other respects, they wash their teeth often, and, by means of toothpicks, carefully remove all substances from between them after meals. A little silver porcupine, with holes all over its back to insert toothpicks, is a common ornament on the dining tables of Spain and Portugal. The general use of them creates so large a demand, that students at Coimbra sometimes support themselves by whittling toothpicks, which are sold tied in small bunches like matches. They are made of willow, on account of its toughness and pliability. Toothpicks of metal are too hard, and are apt to injure the gums. There is the same objection, in a less degree, to quills. But willow toothpicks are preferable to all others; and they have the advantage of being the most cleanly, for they generally break in the using, and are thrown away. Few sights are more offensive to a person of any refinement than a toothpick that has been much used; it is, moreover, uncleanly, and therefore not healthy for the teeth. Food allowed to remain between the teeth, particularly animal food, is very destructive: it should be carefully removed after every meal, and the mouth thoroughly rinsed. This may seem to some like a great talk about a small matter; but these are simple precautions to take, and very slight trouble compared with the agony of aching teeth, or a breath so offensive that your best friend does not wish to sit near you. I can see no reason why a man's complexion should exclude him from the dining-table, but I do see a very good reason why he should be banished for not taking proper care of his teeth. A bad breath is such a detestable thing, that it might be a sufficient reason for not marrying a person of otherwise agreeable qualities. It is, moreover, perfectly inexcusable thus to transform oneself into a walking sepulchre. Nobody needs to have an offensive breath. A careful removal of substances from between the teeth, rinsing the mouth after meals, and a bit of charcoal held in the mouth, will _always_ cure a bad breath. Charcoal, used as a dentifrice--that is, rubbed on in powder with a brush--is apt to injure the enamel; but a lump of it, held in the mouth, two or three times in a week, and slowly chewed, has a wonderful power to preserve the teeth and purify the breath. The action is purely chemical. It counteracts the acid arising from a disordered stomach, or food decaying about the gums; and it is the acid which destroys the teeth.