134 AGE-INCIDENCE 0$ CAUSES OF INFANT MORTALITY 



presumptuous, to fit this and some of the other vague groups to 

 the better-known causes of death. The accompanying chart 

 shows, among other things, how much greater obscurity sur- 

 rounds mortality in infancy than mortality in later life. 



We next eliminate "suffocation" (486 deaths), which occupies 

 the place nearest to "injuries received at birth, " and is clearly dis- 

 tinguished from the other forms of external violence. Infants 

 under one year of age participate (passively of course) to the 

 extent of 1442 deaths in the accidental, suicidal, and homicidal 

 mortality of the Registration Area. 



"Diseases of the Mouth" (208) are eliminated because the title 

 is vague and the number negligible. "Other Diseases of the 

 Skin" (306), are eliminated for the same reasons. This title, 

 with abscess, carbuncle and gangrene, accounts for 389 deaths 

 under one year. 



"Diseases of the Lymphatics" (58) may as well be restored to 

 their place under title, "Diseases of the Circulatory System," 

 which contributes 1360 to the mortality under one year. 



Tuberculous meningitis and scrofula may be separated for 

 the sake of stating the whole tuberculosis mortality under one 

 year in one group. 



GROUP C. TUBERCULOSIS 



Tuberculous meningitis 999 



Tuberculosis of the lungs 810 



Abdominal Tuberculosis 230 



General tuberculosis 102 



Tuberculosis of the larynx (8) ; white swelling (10) ; Potts' 

 disease (28) ; tuberculous abscess (17) ; scrofula (64) ; other 

 organs (42) 169 



Total 2,310 



The following chart shows the age distribution of Group C 

 by single years of life for ten years. The true form of that 

 portion of the curve represented by the straight line from to 

 2310 is indicated by the next chart, derived from the mortality 

 of England and Wales in 1907, which is given by months through 

 the first year, and by weeks in the first month. The mortality 

 begins apparently in the middle of the first month. 



