763 



1. Males, average length 8,6 cm 



2. Females, average length 8,0 „ 



This result agrees in the main with that achieved by Bryant (6), 

 who states that the appendix is about 1 cm longer in the male than 

 in the female. 



FiNNELL (11) and Keltnack (4) reverse these statistics and place 

 the appendix as longer in the female by 1 cm and IV4 mm respec- 

 tivelly: Finnell's figures are somewhat ancient dating back to 1869, 

 while the difference in Kelynack's statistics is almost infinitesimal, 

 so that in view of Bryant's figures, together with those resulting 

 from my own series of cases, it seems more accurate to state that 

 the appendix is slightly longer in the male sex; a significant result, 

 in view of the fact that appendicitis is more frequent in the male. 



Thirdly, the relations of appendix to age are not without interest 

 as the following table shows: 



Table II. Relations of Length of Appendix to Age. 

 based upon 90 cases from the Author's Anatomical Series. 



1. from birth up to 10 years 



2. Between 10 and 20 years 



3. Between 20 and 30 years 



4. Between 30 and 40 years 



5. Between 40 and 50 years 



6. Between 50 and 60 years 



7. Between 60 and 70 years 



8. Between 70 and 80 years 



Omitting the one case met with between the ages of 10 and 

 20 years, it may be said, that the vermiform appendix attains its 

 greatest length between the ages of 20 and 40 years. 



Lastly, I cannot say that I have found any relation between the 

 length of the appendix and the size of the caecum. On several 

 occasions I found a large caecum accompanied by a large appendix 

 but there would not appear to be any causal relation either directly 

 or inversely between appendix and caecum. 



2) Diameter of Appendix. This point I believe to be of 

 considerable physiological and pathological importance. The actual 

 measurement may be ascertained in one of three ways: 



1. By the passage of catheters. 



2. By a graduated iris diaphragm. 



3. By external measurements in millimetres ascertained by a pair 

 of compasses. 



Each method has its advantages; the last is perhaps the best 



50* 



