| | | |CATARRH
| | | | | | | | | | | | |UNKNOWN
| | | | | | | | | | | | |AND MIS.
---------+----+----+----+-----+---+---+---+---+---+---+---+---+--------
1817-1844| 761|44.8| 5.7| 6.1| --|1.6|1.6|6.7| --| --| --| --| 33.5
1817-1857|1081|50.1| 9.2| 4.6| --|1.8|1.3|5.3| --| --| --| --| 27.7
1901-1913| 310|35.2| 7.7| 11.3|3.2|1.3|1.3|1.9|5.8|0.6|1.3|1.0| 29.4

II. CAUSES OF DEAFNESS IN OHIO SCHOOL FROM 1829 TO 1872 AND FROM 1904 TO
1911.

PERIOD |TOTAL NUMBER
| |CONGENITAL
| | |SCARLET FEVER
| | | |MENINGITIS
| | | | |TYPHOID FEVER
| | | | | |MEASLES
| | | | | | |WHOOPING COUGH
| | | | | | | |GENERAL FEVERS
| | | | | | | | |BRAIN FEVER
| | | | | | | | | |PNEUMONIA
| | | | | | | | | | |DIPHTHERIA
| | | | | | | | | | | |CATARRH
| | | | | | | | | | | | |UNKNOWN
| | | | | | | | | | | | |AND MIS.
---------+----+----+----+-----+---+---+---+---+---+---+---+---+--------
1829-1872|1252|33.8|10.3| 3.0|1.8|3.2|1.7|4.6|5.7| --|0.3| --| 35.6
1904-1911| --|38.9| 5.0| 9.2|1.4|2.8|1.7|1.1|5.3|0.5|0.5|3.5| 30.1

III. CAUSES OF DEAFNESS IN IOWA SCHOOL FROM 1855 TO 1870 AND FROM 1855
TO 1912.

PERIOD |TOTAL NUMBER
| |CONGENITAL
| | |SCARLET FEVER
| | | |MENINGITIS
| | | | |TYPHOID FEVER
| | | | | |MEASLES
| | | | | | |WHOOPING COUGH
| | | | | | | |GENERAL FEVERS
| | | | | | | | |BRAIN FEVER
| | | | | | | | | |PNEUMONIA
| | | | | | | | | | |DIPHTHERIA
| | | | | | | | | | | |CATARRH
| | | | | | | | | | | | |UNKNOWN
| | | | | | | | | | | | |AND MIS.
---------+----+----+----+-----+---+---+---+---+---+---+---+---+--------
1855-1870| 245|87.2|13.4| 3.3|1.6|2.0|1.3|6.1|1.3| --| --| --| 33.8
18