472 
Hereditary Deafness 
O 
TABLE VIII. 
Motljers. 
Deaf 
Healing 
h =3 
•483478 
H = 
•000925 
k =3 
•212070 
Hearing 
4632 
20,604,933 
•002294 
Deaf 
469 
13,121 
•56 
O 
TABLE IX. 
Mothers. 
Deaf 
Hearing 
h = /t=3^212070 
H^K= -002294 
Hearing 
4632 
7,730,783 
r = -62 
Deaf 
469 
4632 
TABLE X. 
Mothers. 
ren. 
Deaf 
Hearing 
Hearing 
3525 
5,533,036 
o 
Deaf. 
126 
3525 
h = /• =3-212070 
H==K= -002294 
r = '45 
TABLE XI. 
Value of 
Method of construction of Table 
Paternal 
Maternal 
Tables I. and II. both used, distribution of deafness among parents 
assumed to be that of general population 
Tables I. and II. both used, distribution of deafness among children 
assumed to be that of general population 
Table I. onlj- used, distribution of deafness both among parents and 
children assumed to be that of general population 
Table II. only used, distribution of deafness both among parents and 
children assumed to be that of general population 
0-51 
0-57 
0-62 
0^46 
0-51 
0-56 
0-62 
0-45 
Mean value of ?• 
0-54 
0-535 
