248 Furthe7' Observations on the Pathology of Gastric Ulcer. 



5. Lenhartz, 'Miinch. Med. Woch.,' 1904, vol. 51, p. 1. 



6. Griffini and Vassale, ' Ziegler's Beitr.,' vol. 3, p, 425. 



7. Cannon, ' Am. Journ. Physiol.,' Boston, 1898, vol. 1, p. 359. 



8. Bolton, ' Eoy. Soc. Proc.,' B, vol. 79, p. 267, 1907. 



9. Imperial Cancer Research Fund, Third Scientitic Report, p. 341. 



DESCRIPTION OF PLATES. 

 Plate 8. 



Fig. 1.— To illustrate the normal healing of gastric ulcer in the cat. 



A. Fourth day. — A punched out ulcer, with cleanly cut edges, extends through the 



muscular coat of the stomach. 



B. 16th day. — This specimen shows an excessive amount of contraction, which is 



unusual. In the centre is a small unhealed surface. 



Fig. 2. — Section of cat's stomach showing regeneration of the glands on the 55th day. 



The glands are irregular, no oxyntic cells are present, and there is a consider- 

 able amount of interstitial tissue. 



Plate 9. 



Fig. 3. — To illustrate the delay in healing produced by motor insufficiency of the stomach. 



A. Stomach of control cat. Group 1. (Pyloric stenosis.) A small radiating scar is 



seen (21st day) to the right of the centime. 



B. Stomach of Cat 5, Group 1. An unliealed and thickened ulcer is present (35th 

 day). The stomach is a little dilated and the ruga; are not so prominent as normal. 



Fig. 4. — Section of stomach of 56th day cat. Group 2. (Pj-loric stenosis), showing very 

 irregular growth and cystic dilatation of the regenerated glands. 



Fig. 5. — Section of stomach of 41st day cat. Group 3. (Pyloric stenosis), showing an 

 unhealed ulcer with sclerotic base and the epithelium growing over it in a 

 single layer of cells. 



