Take particular care of the _food_ of an infant. If it is nourished by the mother, her own diet should be simple, nourishing, and temperate. If the child be brought up by hand, the milk of a new-milch cow, mixed with one third water, and sweetened a little with _white_ sugar, should be the only food given, until the teeth come. This is more suitable, than any preparations of flour or arrow-root, the nourishment of which is too highly concentrated. Never give a child _bread_, _cake_, or _meat_, before the teeth appear. If the food appear to distress the child, after eating, first ascertain if the milk be really from a new-milch cow, as it may otherwise be too old. Learn, also, whether the cow lives on proper food. Cows that are fed on _still-slops_, as is often the case in cities, furnish milk which is very unhealthful.
Be sure and keep a good supply of pure and fresh air, in the nursery. On this point, Dr. Bell remarks, respecting rooms constructed without fireplaces, and without doors or windows to let in pure air, from without, "The sufferings of children of feeble constitutions, are increased, beyond measure, by such lodgings as these. _An action, brought by the Commonwealth_, ought to lie against those persons, who build houses for sale or rent, in which rooms are so constructed as not to allow of free ventilation; and _a writ of lunacy_ taken out against those, who, with the common-sense experience which all have on this head, should spend any portion of their time, still more, should sleep, in rooms thus nearly air-tight."
After it is a month or two old, take an infant out to walk, or ride, in a little wagon, every fair and warm day; but be very careful that its feet, and every part of its body, are kept warm: and be sure that its eyes are well protected from the light. Weak eyes, and sometimes blindness, are caused by neglecting this precaution. Keep the head of an infant cool, never allowing too warm bonnets, nor permitting it to sink into soft pillows, when asleep. Keeping an infant's head too warm, very much increases nervous irritability; and this is the reason why medical men forbid the use of caps for infants. But the head of an infant should, especially while sleeping, be protected from draughts of air, and from getting cold.