1910-11.] Incidence of Mortality from Pulmonary Tuberculosis. 371 
In both these diseases the male exceeds the female mortality at 0-5 
in both countries. In tuberculous peritonitis the female rate at 5-15 is 
in excess of the male to about the same extent in both countries. In 
tuberculous meningitis the excess of the female over the male rate is 
greater in Scotland. Thus at age period 5-15 the mortality in both 
sexes from tuberculosis of the lungs tuberculous meningitis, and tuberculous 
peritonitis, is greater in Scotland than in England and Wales, the relation 
between the male and female rates in the two latter diseases, especially in 
tuberculous peritonitis, being not very dissimilar. 
Certain other diseases are recognised as predisposing to pulmonary 
tuberculosis. Table XIV. shows the rates for age periods 0-20 from 
bronchitis, pneumonia, and enteric fever. The rate from bronchitis is 
greater in Scotland at 5-15 both among males and females, and in 
pneumonia at 10-15. The mortality from enteric fever is greater in 
both sexes in Scotland. The relation of the female to the male mortality is 
similar in both countries. 
The excess of female over male mortality from tuberculosis of the 
lungs at age period 5-15, which is observed in other countries also, is 
difficult to explain, unless the developmental changes associated with 
puberty predispose females to attack from this disease. 
Addendum. 
(MS. received March 16, 1911.) 
Comparison between the Mortality from Tuberculosis of the Lungs 
and that from All Causes except Tuberculosis of the Lungs. — In Table 
XV. the rates of mortality from all causes except tuberculosis of the lungs 
at all ages and in each sex which occurred in Scotland and in England 
and Wales during 1861-70, 1901-05, and 1906-07, are set out, and in Table 
XVI. the rates at the different age periods are given. Table XV. shows 
that the reduction of mortality among females between 1906-07 and 
1861-70 has been less in Scotland than in England and Wales, being 20 
per cent, in the former and 26 per cent, in the latter, and that in Scotland 
the reduction in the female has been rather less than in the male mortality, 
while in England the reverse is the case. 
Mortality at Age Periods. — At age period 0-5 this has been lower in 
Scotland than in England and Wales since 1861-70 in both sexes owing to 
the lower infantile* mortality in Scotland. During the period 1861-70 to 
1881-90 the mortality among females in Scotland was higher than among 
