At the time these buildings were built, near the turn of the century, concrete was not readily available. But rock, particularly the limestone and sandstone that underlies Monroe County, Ohio was everywhere and cheap. Most farm buildings of the era were built on foundations of stone that were laid directly on the ground. The wooden structural posts and beams were laid directly on the stone foundations. The above is a corner of a chicken house.
The demise of many of the old buildings of this era can be traced to the eventual shifting of these foundation stones allowing the buildings to shift and eventually fall down. Rodents including groundhogs, ground squirrels, rats and mice that liked to make their homes close to a food supply that they frequently found in the buildings, were a major cause of these foundation stones eventually shifting.
Photo provided by Dorothy Bayes