I was having fun browsing the NCBI Bookshelf and came across this gem from The Care and Feeding of Children: A Cathecism for the Use of Mothers and Children's Nurses by Dr. L. Emmett Holt, published by D. Appleton & Company in New York, 1894. This admonition is from the Miscellaneous section which is mostly focused on poop details (potty training at 3 months?!), just like many parents of babies are still 115 years later.
