Powdered carbonate of ammonia one ounce, strong solution of ammonia half a fluid ounce, oil of rosemary ten drops, oil of bergamot ten drops. Mix, and while moist put in wide-mouthed bottle which is to be well closed.
Prepared chalk half a pound, powdered myrrh two ounces; camphor two drachms, orris root, powdered, two ounces; moisten the camphor with alcohol and mix well together.
This preparation is used by dentists. Pure muriatic acid one ounce, water, one ounce, honey two ounces, mix thoroughly. Take a tooth-brush, and wet it freely with this preparation, and briskly rub the black teeth, and in a moment's time they will be perfectly white; then immediately wash out the mouth well with water, that the acid may not act on the enamel of the teeth. This should be done only occasionally.
Bad breath from catarrh, foul stomach, or bad teeth, may be temporarily relieved by diluting a little bromo chloralum with eight or ten parts of water, and using it as a gargle, and swallowing a few drops before going out. A pint of bromo chloralum costs fifty cents, but a small vial will last a long time.