philis; affecting the nerve, paralysis,
convulsions, sunstroke, congestion of brain, and disease of nervous
system; and affecting brain center, hydrocephalus and epilepsy. Among
unclassified causes are also adduced neuralgia, childbirth, accident,
medicine, heat, rheumatism, head-ache, fright or shock, overwork,
lightning, diarrhea, chicken-pox, operation, and other causes.

[21] Proceedings of National Conference of Charities and Corrections,
1906, p. 250; Ceremonies of Laying of Corner Stone of Rhode Island
School, 1907, p. 27.

[22] There are no general or organized movements on foot for the
prevention of deafness as there are for the prevention of blindness.
This is perhaps chiefly because there are believed to be nothing like so
many preventable cases of the one as of the other, so much of blindness
being due to diseases that might have been avoided without great
difficulty, and to accidents and other injuries to the eye.

[23] It has been estimated that three-fourths of deafness from primary
ear diseases, and one-half from infectious diseases, is preventable. See
Proceedings of International Otological Congress, _loc. cit._; _Volta
Review_, xiv., 1912, pp. 251, 348.

[24] Proceedings, 1903, p. 1036.

[25] _Volta Review_, xv., 1913, p. 136. See also _ibid._, v., 1903, p.
415; _Outlook_, civ., 1913, p. 997.

[26] See _Medical and Surgical Monitor_, vii., 1904, p. 47; _New York
Medical Journal_, lxxxiii., 1906, p. 816; _Annals_, lv., 1910, p. 192;
_Volta Review_, xiii., 1911, p. 332.

[27] The possibilities, for instance, in the use of antitoxins and
vaccines in certain diseases are just beginning to be known, and some
results as affect deafness may be expected from such operations.

[28] In 1909 a special committee in regard to the prevention of deafness
was created by the Otological Section of the American Medical
Association, and in 1910 both by the American Laryngological,
Rhinological and Otological Society and by the American Otological
Society. See _Laryngoscope_, xx., 1910, pp. 596-665; _Volta Review_,
xii., 1910, pp. 267, 545.

[29] Laws, 1906, ch. 502.

[30] On the possibilities of the prevention of adventitious deafness,
see Dr. J. K. Love, "Deaf-Mutism", 1896; Archives of Otology, xxiv.,
1895, p. 50; _Journal of American Medical Association_, liii., 1909, p.
89; _New York Medical Journal_, l., 1889, p. 205; lxxxix., 1909, p.
1007; xcv., 1912, p. 1189; _New York State Journal of Medicine_, xii.