The use of the unsevered omentum and free omental grafts is a well known surgical procedure. The literature concerning the fate of the free transplants is meager. The purpose of these experiments was to determine the ultimate fate and value of omentum cut loose from its normal blood supply. Freeman suggests that an advantage of the free transplant over the undetached tip of the omentum is that we avoid entangling bands and injurious traction on the colon and stomach, and that if the entire omentum is attached to a given spot, a secondary emergency may develop in which it would be needed again. TECHNIC In this work the omentum was transplanted in large and small amounts to the stomach, large and small bowel, liver, spleen, kidney, bladder, and various areas denuded of peritoneum. It was also transplanted free beneath the skin to determine its ultimate fate when used for plastic