224 Mr. G. King and Dr. A. Newsliolme. 



to the parts of the body primarily affected.* In the original the 

 Frankfort figures are given in great detail, but we have summarised 

 them somewhat. Thus, Table XIII shows both for males and 

 females at all ages the total number of deaths from cancer of various 

 parts of the body in the same year periods as we have adopted through- 

 out this paper. 



The subdivisions in Table XIII are still too minute, and the num- 

 bers consequently too small, for the purposes of useful investigation 

 in the present connexion, and we therefore proceeded to group them, 

 as shown in Table XIV, in three broad classes, which may be called 

 " accessible cancer," comprising cancers of external parts of the body 

 and other parts in which the nature of the disease is easily demon- 

 strable during life by physical examination ; " inaccessible cancer," 

 comprising cancers of internal parts and other parts in which, as in 

 the case of cancer of the bones, diagnosis is less easily made ; and 

 " cancer, position undefined," comprising simply the first line of 

 Table XIII. In Table XIV only deaths at age 20 and over are 

 included. 



Under " Accessible cancer " we have included only the four head- 

 ings Tongue, Mamma, Uterus, and Vagina, cancers of which are all 

 capable of careful and exact diagnosis. 



Under " Inaccessible cancer " come cancers primarily affecting any 

 other parts of the body. 



It will be seen from Table XIII that the great majority of cancers 

 coming under this second head are of parts of the body in which the 

 difficulties of diagnosis are great. 



The classification cannot be regarded as perfect. Thus it may be 

 pointed out that the first group embraces a large excess of women, 

 among whom it is shown by the Registrar- General's returns in 

 Great Britain that the apparent increase in cancer has been in less 

 ratio than among men. In the next place, it may be argued that we 

 have placed under the " inaccessible " division cancer of certain parts 

 that might be more appropriately described as accessible. The 

 following are the doubtful cases here referred to : 



* ' Statistiche Mittheilungen iiber den Cirilstand der Stadt Frankfurt-am-Main ' 

 (18601889). 



