Until recently surgeons all over the world generally agreed that an extensive gastric resection (75 to 80%) was the procedure of choice for peptic ulcer, the operation usually being carried out on the Billroth II plan. The only other operation that has had any general acceptance, and this has been principally in Germany and Scandinavia, is the Billroth I gastric resection. It is agreed that the extensive subtotal gastrectomy renders the patients free from their previous symptoms and greatly decreases the chances of recurrent jejunal ulcer. However, a majority of such patients do not gain weight and they have minor postcibal symptoms. The so-called postgastrectomy syndrome includes not only certain postcibal symptoms but also a considerable loss of the ability to gain weight and renders these patients incapable of work demanding great activity. These patients have been regarded as suffering from a gross disorder of physiology due to the exclusion