2) ae ee oo a eee ae 
? . 
Ie meee!” oe 
“eee oe en ee ee ee ee ee ee ee 
1064 
by the small tip of the rudimentary appendix with its submucosa, but 
these muscle fibers are definitely part of the circular muscle of the 
cecum. There is no evidence of inflammation in the sections. 
SUMMARY. 
In this case, which presented no signs of inflammation of the perito- 
neum, and showed no other congenital anomalies, there was no appendix 
visible on external examination of the cecum, and on microscopic 
examination only a rudimentary structure could be found, which extended 
as a shallow invagination of the mucosa of the cecum from its lumen, 
to end between the fibers of the circular muscle of the caecum. The 
latter was subdivided into four shallow haustra. The rudimentary 
structure showed only mucosa, and no muscular or peritoneal coat of 
its own. It is interesting that the ileo-colic fold remained. 
From the features here summarized we regard this case as an example 
of agenesis of the appendix. 
LITERATURE. 
(1) Brewer, G. E.: Intussusception of appendix vermiformis. Am. Med. (1905), 
9, 67. 
(2) Eliot, Ellsworth: Three unusual cases of appendicitis. Med. & Surg. Rep. 
of the Presbyterian Hosp. in the city of New York (1898), 3, 173. 
(3) Ferguson, John: Some important points regarding the appendix vermiformis. 
Am. J. of Med. Sci. (1901), 101, 61. 
(4) Kelly & Hurdon: The Vermiform Appendix. W. B. Saunders & Co., Phil. 
& Lond. (1905). 
(5) Sehridde, Herm: Ueber den angeborenen Mangel des Processus vermiformis. 
Arch. f. path. Anat, Berl. (Virchow’s Arch.) (1904), 177, 150-166. 
