We now proceed to make comparison of the proportions of deafness from the principal diseases in a series of years some time past with similar proportions in recent years. The following tables give the several proportions in the American School (Connecticut) in the entire attendance from 1817 to 1844 and from 1817 to 1857, and in the new admissions from 1901 to 1913; in the Ohio School in the entire attendance from 1829 to 1872, and in the average annual attendance in 1904, 1905, 1906, and 1911; in the Iowa School in the entire attendance from 1855 to 1870 and from 1855 to 1912; and in the New York Institution in the entire attendance from 1818 to 1853 and in the average annual attendance from 1899 to 1912.[38] I. CAUSES OF DEAFNESS IN AMERICAN SCHOOL FROM 1817 TO 1844, FROM 1817 TO 1857, AND FROM 1901 TO 1913. PERIOD |TOTAL NUMBER | |CONGENITAL | | |SCARLET FEVER | | | |MENINGITIS | | | | |TYPHOID FEVER | | | | | |MEASLES | | | | | | |WHOOPING COUGH | | | | | | | |GENERAL FEVERS | | | | | | | | |BRAIN FEVER | | | | | | | | | |PNEUMONIA | | | | | | | | | | |DIPHTHERIA | | | | | | | | | | | |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.