Black pepper, if used profusely as is often done in American cooking, becomes an irritant, and produces indigestion. Red pepper, or cayenne, on the contrary, is a useful stimulant at times; but, as with mustard, any over-use irritates the lining of the stomach. So with spices and sweet herbs. There should be only such use of them as will flavor well, delicately, and almost imperceptibly. No one flavor should predominate, and only a sense of general savoriness rule. Extracts, as of vanilla, lemon, bitter almond, &c., should be used with the greatest care, and if possible always be added to an article after it cools, as the heat wastes the strength. BEVERAGES. Tea and coffee are the most universal drinks, after water. The flavor of both is due to a principle, _theine_ in tea, _caffeine_ in coffee, in which both the good and the ill effects of these drinks are bound up. It is hardly necessary the principles should have different names, as they have been found by chemists to be identical; the essential spirit of cocoa and chocolate,--_theobromine_,--though not identical, having many of the same properties. _Tea_ is valuable chiefly for its warming and comforting qualities. Taken in moderation, it acts partly as a sedative, partly as a stimulant, arresting the destruction of tissue, and seeming to invigorate the whole nervous system. The water in it, even if impure, is made wholesome by boiling, and the milk and sugar give a certain amount of real nourishment. Nervous headaches are often cured by it, and it has, like coffee, been used as an antidote in opium-poisoning. Pass beyond the point of moderation, and it becomes an irritant, precisely in the same way that an overdose of morphine will, instead of putting to sleep, for just so much longer time prevent any sleep at all. The woman who can not eat, and who braces her nerves with a cup of green tea,--the most powerful form of the herb,--is doing a deeper wrong than she may be able to believe. The immediate effect is delightful. Lightness, exhilaration, and sense of energy are all there; but the re-action comes surely, and only a stronger dose next time accomplishes the end desired. Nervous headaches, hysteria in its thousand forms, palpitations, and the long train of nervous symptoms, own inordinate tea and coffee drinking as their parent. Taken in reasonable amounts, tea can not be said to be hurtful; and the medium qualities, carefully prepared, often make a more wholesome tea than that of the highest price, the harmful properties being strongest in the best. If the water is soft, it should be used as soon as boiled, boiling causing all the gases which give flavor to water to escape. In hard water, boiling softens it. In all cases the water must be fresh, and poured boiling upon the proper portion of tea,--the teapot having first been well scalded with boiling water. Never boil any tea but English-breakfast tea; for all others, simple steeping gives the drink in perfection.