To Render Wood Uninflammable
Professor Kedzie, of the Agricultural College of Michigan, an expert chemist, says that a paint or wash made of skim milk, thoroughly skimmed, and water brine, will render wood uninflammable, and he proved it by experiment. He said this paint, or whitewash, is durable, very cheap, impervious to water, of agreeable color, and, as it will prevent wood from taking fire, urged its use, particularly on roofs, outbuildings, barns, etc.

The Farm and Household Cyclopędia - circa 1888