Mint condition, 8 pages booklet, 5 color illustrations. Marked Standard Oil 1925, Nujol Laboratories. Last page is a statement about liquid petrolatum provided by Standard Oil to Nujol Laboratories. This Intestinal Pathology booklet explains the benefits of the Nujol lubricant drug. Illustrations: Cancer prevention, Internal Stasis, Sigmoidoscopic Views of Colitis, Peristaltic Fatigue, Stools in Infancy.