Usually the hot water in the vacuum bottle, when added to the milk, will make the feeding the right temperature for the baby. Carry small cans of milk, using whatever is needed for one feeding only. Perhaps you can drink what is left in the can yourself or give it to a fellow traveler. Do not save it to use later.
The one thing you cannot do is to run the risk of giving your baby contaminated or sour milk. Never attempt to carry the milk warm in a vacuum jug. If you do, the bacteria that are present in milk will multiply many times, with the result that when the milk is fed to the baby, it will make him sick.
You can carry boiled nipples in a jar, as already suggested, or you can use nursing bottles with caps that make it possible to reverse the nipples into the bottle and thus keep them sterile.
Water for the baby.
—For baby's protection, it is very important that you do not give him water that has not been boiled. Usually it is better to take several bottles of boiled water from home even though you may find it possible to obtain boiled water on the train. Or plan to use the boiled water from the vacuum jug.
Other food for the baby.
—Orange juice and cod-liver oil usually cannot be carried conveniently. There is no harm in letting your baby go without these during the time when you will be traveling.
Unless your baby is on a special diet, don't load yourself down with canned foods under present traveling conditions. Your baby can get along for a few days on his milk. Plan to use as little food as you think you can get by with.
If your baby is a hearty eater and you fear that he will miss his cereal, then carry dry ready-prepared baby cereal, to which you can add hot water from the vacuum bottle. You will need to take a dish and a spoon in the shopping or duffle bag. Foods that require heating will have to be omitted. Some children do not object to cold food. If yours does not, and if he has a big appetite, you can take canned vegetables or fruits, which he can eat from the can. Take rusks or crackers along for emergency use.
In planning these solid foods, remember that nothing can be heated except by the addition of hot water from your vacuum jug, and that no utensils can be washed on the train.