This section is from the book "The Home Hand-Book of Domestic Hygiene and Rational Medicine. Volume 2.", by J. H. Kellogg, M.D.. Also available from Amazon: The Home Hand-Book of Domestic Hygiene and Rational Medicine, Volume 2.
A healthy child, during the first few weeks of its life, sleeps nearly five-sixths of the time. The infant should be taught to go quietly to sleep while lying in its crib, without rocking, petting, or carrying in the arms. If the child is taught correct habits at the start, it will give much less trouble than if humored and petted until it makes unnecessary demands. The face of a child should never be covered during sleep, as it needs an abundance of fresh air as well as older persona As a general rule, it is better that the infant should not sleep in the same bed with an older person, even its mother. In cold weather, when it needs additional warmth, one or two large bottles filled with warm water may be laid beside it. Its crib should be well padded upon the inside, so as to protect it from receiving injury from the hard frame-work.