a grippe 1.5| 3.0| 2.3| -- |
Miscellaneous | | | |
and Unknown 30.6|30.3|32.9|41.9|

III. CAUSES OF DEAFNESS IN PENNSYLVANIA INSTITUTION FROM 1843 TO 1912

|1843|1847|1851|1855|1859|1863|1867|1871|1875|1879|1883
|1846|1850|1854|1858|1862|1866|1870|1874|1878|1882|1886
+----+----+----+----+----+----+----+----+----+----+----
Total Number | 90| 111| 125| 143| 167| 152| 150| 178| 282| 233| 261
+----+----+----+----+----+----+----+----+----+----+----
Congenital |54.4|58.5|56.0|46.8|53.3|48.4|40.0|42.1|31.2|24.4|34.1
Scarlet Fever |13.3|18.0|12.8|16.8| 9.6|19.7|16.0|18.6|18.1|13.7|14.9
Meningitis | -- | -- | 0.8| -- | -- | 2.0| 1.3| 9.6|18.1|25.7|16.4
Measles | 1.1| 2.7| 1.6| 2.8| 2.4| 3.3| 4.0| 1.1| 1.7| 2.6| 1.9
Whooping Cough | 2.2| 0.9| 0.8| 0.7| 1.2| 0.7| 1.3| 0.6| 0.3| 0.8| --
Catarrh | -- | 0.9| -- | -- | -- | -- | 0.7| 0.6| 2.1| -- | --
Brain Fever | -- | -- | 2.8| 2.1| -- | 6.0| 4.7| -- | -- | -- | 0.8
Typhoid Fever | -- | -- | -- | 1.4| 0.6| 0.7| 2.6| 2.7| 2.1| 2.6| 3.4
Diphtheria | -- | -- | -- | -- | -- | -- | 0.7| -- | -- | -- | --
Pneumonia | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
La grippe | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
Mis. and Unknown |29.0|19.2|25.2|29.4|32.9|19.2|28.7|24.7|26.3|30.2|28.5

1887|1891|1895|1899|1903|1907|1911|
1890|1894|1898|1902|1906|1910|1912|
----+----+----+----+----+----+----+
Total Number 207| 248| 250| 239| 240| 282| 152|
----+----+----+----+----+----+----+
Congenital 47.3|46.8|41.6|32.2|35.8|33.7|34.2|
Scarlet Fever 14.0|14.1|11.2| 6.3|10.4| 3.9| 5.2|
Meningitis 5.8| 5.6| 7.6| 8.4| 7.1|17.4|15.1|
Measles 3.9| 3.2| 4.4| 4.6| 4.5| 3.5| 3.9|
Whooping Cough 0.5| 0.4| 0.8| 1.7| 0.7| 2.9| 1.3|
Catarrh 3.9| 4.8| 6.8| 4.2| 1.2| 2.5| 1.3|
Brain Fever 2.9| 5.2| 4.0| 3.4| 1.7| 2.9| 2.6|
Typhoid Fever 2.9| 3.6| -- | 2.5| 0.7| 3.9| 1.3|
Diphtheria 0.5| 1.6| 2.0| 0.8| 2.5| 1.2| 2.0|
Pneumonia 0.5| -- | -- | 0.8| 0.4| 1.2| 4.8|
La grippe -- | 0.4| -- | 2.1| 1.2| 0.3| -- |
Mis. and Unknown 17.8|14.3|21.6|33.0|33.8|26.6|28.3|

IV. CAUSES OF DEAFNESS IN WESTERN PENNSYLVANIA INSTITUTION FROM 1887 TO
1