4.6| 0.2| 0.7|
Typhoid Fever 1.1| 0.9| 0.5|
Convulsions 1.9| 2.0| 2.1|
Various Fevers 0.5| 0.5| 0.7|
Catarrh 0.8| 1.0| 0.5|
Diphtheria 0.7| 0.7| 0.5|
Pneumonia 1.1| 0.7| 0.5|
Whooping Cough 0.5| 0.5| 0.2|
Miscellaneous | | |
and Unknown 18.6|20.7|18.5|

II. CAUSES OF DEAFNESS IN MICHIGAN SCHOOL FROM 1883 TO 1912

|1883|1885|1887|1889|1891|1893|1895|1897|1899|1901|1903
|1884|1886|1888|1890|1892|1894|1896|1898|1900|1902|1904
+----+----+----+----+----+----+----+----+----+----+----
Total Number | 302| 336| 342| 350| 343| 365| 428| 412| 441| 447| 451
+----+----+----+----+----+----+----+----+----+----+----
Congenital | 7.0|18.8|23.1|26.3|24.2|26.3|25.2|30.3|28.8|31.5|32.8
Meningitis |28.8|28.1|23.1|23.1|21.3|15.8|15.6|14.5|10.2| 9.2| 4.6
Scarlet Fever |12.2|11.8|12.3|11.2| 9.0| 9.6| 9.5| 9.7| 9.5| 9.3| 7.6
Brain Fever | 6.2| 6.5| 4.8| 3.7| 5.2| 6.9| 6.6| 6.3| 5.4| 3.8| 3.8
Typhoid Fever | 4.6| 3.6| 4.1| 4.3| 4.7| 1.9| 1.8| 1.4| 2.5| 2.2| 1.3
Measles | 3.6| 4.1| 3.9| 2.9| 2.6| 1.4| 0.8| 1.9| 3.2| 3.1| 2.9
Diphtheria | 0.6| -- | -- | 0.3| 0.3| 0.3| 0.2| 0.2| 0.4| 0.2| 0.4
Catarrh | 0.6| 0.6| 0.9| 0.8| 0.9| 1.1| 1.9| -- | 2.9| 3.5| 3.3
Various Fevers | 2.9| 1.5| 2.0| 2.6| 3.0| 4.4| 4.4| 1.7| 2.9| 2.9| 3.3
Whooping Cough | 1.3| 1.2| 1.5| 1.5| 1.5| 3.0| 3.8| 3.6| 2.7| 2.5| 3.1
Pneumonia | -- | -- | -- | -- | -- | -- | -- | -- | 0.2| 0.2| 0.4
La grippe | -- | -- | -- | -- | -- | -- | -- | -- | 0.9| 1.1| 1.6
Miscellaneous | | | | | | | | | | |
and Unknown |32.2|23.8|24.3|23.3|27.3|29.3|30.2|30.4|30.4|31.5|34.9

1905|1907|1909|1911|
1906|1908|1910|1912|
----+----+----+----+
Total Number 404| 361| 354| 353|
----+----+----+----+
Congenital 36.6|35.7|35.0|31.2|
Meningitis 8.6| 9.5| 8.8| 8.2|
Scarlet Fever 6.9| 5.8| 3.6| 4.5|
Brain Fever 2.7| 2.5| 2.3| 1.0|
Typhoid Fever 1.0| 1.4| 1.5| 1.7|
Measles 2.9| 4.1| 3.4| 3.1|
Diphtheria 0.5| 0.2| 0.3| 0.3|
Catarrh 2.8| 1.9| 2.5| 0.8|
Various Fevers 2.5| 0.5| 2.0| 1.4|
Whooping Cough 3.4| 4.4| 4.8| 5.1|
Pneumonia -- | 0.7| 0.6| 0.8|
L