done up in a cotton net. Night-caps heat the head and injure hair. Ammonia is the most healthful and efficient stimulus known for the hair, and quickens its growth when nothing else will do so. A healthy system will supply oil enough for the hair if the head is kept clean. If the scalp is unnaturally dry, a mixture of half an ounce of carbonate of ammonia in a pint of sweet-oil makes the mostesteemed hair invigorator. Glycerine and ammonia make a delicate dressing for the hair, and will not soil the nicest bonnet. Pomades of all kinds are voted vulgar, and justly. The only excuse for their use is just before entering a sea bath, when a thorough oiling of the hair prevents injury from salt water. It should be speedily washed off with a dilution of ammonia.
When a growth of young hair is established, it ought to lengthen at least eight inches a year in a vigorous subject. Hair is an index of vitality. The women of the tropics, with their abounding health, have luxuriant cheve-
